Exchange
Definition: giving one thing and receiving another
Concept: exchange trade don't hold or keep things
Synonyms: barter, castling, change, commerce, commutation, conversion, correspondence, deal, dealing, interchange, interdependence, interrelation, network, rearrangement, reciprocation, reciprocity, replacement, revision, shift, shuffle, shuffling, substitution, supplanting, supplantment, swap, switch, traffic, transaction, transfer, transposing, transposition, truck

Ex - change
Definition: out, forth upward Change
Concept: give - get, set - get
Synonyms: alternate, bandy, bargain, barter, cash in, castle, change, change hands, commute, contact with, convert into, correspond, deal in, displace, flip-flop, hook up, horse trade, interchange, invert, link up, market, network, pass to, pay back, rearrange, reciprocate, replace, reverse, revise, seesaw, shift, shuffle, shuttle, substitute, swap, swap horses, switch, traffic, transact, transfer, transpose, truck

Change
Definition: differ substitute
Concept: substitution of one thing for another - cambire, barter
Synonyms: alternate, barter, convert, displace, exchange, interchange, invert, remove, replace, reverse, shift, supplant, swap, switch around, trade, transmit, transpose

Swap
Definition: exchange or barter
Concept: exchange
Synonyms: exchange or barter a thing suitable for swapping. bandy, bargain, barter, change, interchange, substitute, switch, swop, trade, traffic, truck, stock

Swap meet
Definition: trade or exchange items
Concept: swap exchange barter
Synonyms: enthusiasts or collectors trade or exchange items - bandy, bargain, barter, change, interchange, substitute, switch, swop, trade, traffic, stock

Interchange
Definition: switch
Concept: swap exchange
Synonyms: alternate, bandy, barter, commute, connect, contact, convert, exchange, interact, interface, mesh, network, reciprocate, relate, reverse, substitute, swap, trade, transpose

Barter
Definition: trade
Concept: exchange
Synonyms: bargain, exchange, haggle, swap, trade, traffic, truck

Bargain
Definition: negotiation
Concept: arrangement
Synonyms: agree, arrange, barter, buy, compromise, confer, contract, covenant, deal, dicker, do business, haggle, palter, promise, sell, stipulate, trade, traffic, transact

Negotiation
Definition: talk discussion about regular trade, business, action
Concept: trading, dealing, bargaining
Synonyms: agreement, arbitration, colloquy, compromise, conference, consultation, debate, diplomacy, discussion, intervention, mediation, meeting, transaction

Trade
Definition: exchange
Concept: buying and selling
Synonyms: buying and selling, transaction, swap, exchange, barter, business, clientele, commerce, contract, custom, customers, deal, dealing, enterprise, exchange, industry, interchange, market, merchantry, patronage, public, sales, swap, traffic, transaction, stock, matter, goods

Transaction
Definition: undertaking
Concept: business action
Synonyms: act, action, activity, affair, agreement, bargain, bond, business, buying, compact, contract, convention, coup, covenant, deal, dealing, deed, disposal, doings, enterprise, event, execution, goings-on, hanky-panky, hap, happening, intercourse, irons, matter, negotiation, occurrence, ongoing, pact, performance, play, proceeding, purchase, purchasing, sale, selling, step

Action
Definition: deed
Concept: commercial business done for profit
Synonyms: accomplishment, achievement, act, blow, commission, dealings, doing, effort, enterprise, execution, exercise, exertion, exploit, feat, handiwork, maneuver, move, operation, performance, procedure, step, stroke, thrust, transaction, undertaking

Tools & Devices

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Tool tools
Definition: device or implement used to carry out mechanical functions manually or by a machine.
Concept: instrument implement
Synonyms: apparatus, appliance, bucksaw, contraption, contrivance, device, dojigger, engine, gadget, gizmo, implement, job, machine, means, mechanism, utensil, weapon, whatchamacallit
Synonyms: accessory, accomplice, agent, auxiliary, cat's-paw, chump, creature, dupe, easy mark, figurehead, flunky, go-between, greenhorn, hayseed, hireling, idiot, intermediary, jackal, lackey, mark, medium, messenger, minion, patsy, pawn, peon, puppet, stooge, stool pigeon, sucker, tuna, vehicle

Instrument
Definition: tool or device implement or resource
Concept: tools accomplice
Synonyms: apparatus, appliance, contraption, contrivance, device, doodad, equipment, gadget, gear, gizmo, implement, machine, machinery, mechanism, paraphernalia, tackle, thingamabob, thingamajig, utensil
Synonyms: agency, agent, channel, factor, force, instrumentality, material, mechanism, medium, ministry, organ, vehicle, wherewithal

Device
Concept: a thing made or adapted for a particular purpose
Definition: tools instruments
Synonyms: accessory, agent, apparatus, appliance, arrangement, article, construction, contraption, contrivance, creation, dingus, dohickey, equipment, expedient, gadget, gear, gimmick, implement, invention, machine, makeshift, material, means, mechanism, medium, outfit, resort, resource, rigging, shift, tackle, thing, thingamabob, tool, utensil, whatchamacallit, whatnot, whatsit
Synonyms: as ploy - artifice, cabal, chicanery, clever move, craft, craftiness, cunningness, design, dodge, evasion, expedient, fake, feint, finesse, gambit, game, gimmick, improvisation, loophole, machination, maneuver, method, pattern, plan, plot, project, proposition, purpose, racket, ruse, scheme, shift, stratagem, strategy, stunt, subterfuge, trap, trick, wile
Synonyms: as symbol - badge, colophon, crest, design, emblem, figure, insignia, logo, motif, motto, pattern, sign, slogan, token

Apparatus
Definition: equipment
Concept: equipment
Synonyms: accoutrement, appliance, black box, bugger, contraption, device, dingbat, dohickey, dojiggy, doodad, fandangle, furnishings, gaff, gear, gimcrack, gimmick, gizmo, grabber, habiliments, idiot box, implement, jigger, machine, machinery, means, mechanism, outfit, paraphernalia, provisions, set-up, stuff, sucker, supplies, tackle, thingamajig, thingamajigger, tools, utensils, whatchamacallit, whatsis, whosis, widget

Appliance
Definition: machine
Concept: machine
Synonyms: apparatus, device, gadget, implement, instrument, mechanism, tool

Artifice
Definition: hoax
Concept: fooling
Synonyms: con, contrivance, device, dodge, expedient, gambit, gimmick, know-how, machination, maneuver, play, ploy, racket, ruse, savvy, stratagem, subterfuge, tactic, wile

Equipment
Definition: supplies
Concept: equipment
Synonyms: accessories, accompaniments, accouterments, apparatus, appliances, appurtenances, articles, attachments, baggage, belongings, contraptions, contrivances, crop, devices, equipage, facilities, fittings, fixtures, furnishings, furniture, gadgets, gear, habiliments, impedimenta, machinery, material, materiel, miscellaneous, outfit, paraphernalia, provisioning, provisions, rig, setup, shebang, stock, store, stuff, supply, tackle, things, tools, trappings, traps, utensils

Contrivance
Definition: gadget
Concept: tool
Synonyms: apparatus, appliance, brainchild, coinage, contraption, convenience, creation, device, discovery, engine, equipment, gear, gimcrack, harness, implement, instrument, invention, machine, material, mechanism, tackle, thingamajig, tool, utensil, whatsis, widget