Exchange - Vine's Expository Dictionary of New Testament Words
Exchange[ A-1,Noun,G465, antallagma ]
the price received as an equivalent of, or in exchange for, an ariticle, an exchange" (anti, "instead of," allasso "to change," akin to allos, "another"), hence denotes the price at which the "exchange" is effected, Matthew 16:26; Mark 8:37. Connected with this is the conception of atonement, as in the word lutron, "a ransom." Cp. allagma in the Sept., e.g., in Isaiah 43:3.
[ B-1,Verb,G3337, metallasso ]
(a) "to exchange," meta, "with," implying change, and allasso (See A), Romans 1:25, of "exchanging" the truth for a lie, RV, for AV, "changed;"
(b) "to change," Romans 1:26, a different meaning from that in the preceding verse. See CHANGE. In the Sept., Esther 2:7, Esther 2:20.
Note: In Luke 24:17, "what communications are these that ye have one with another?" the verb antiballo, "to throw in turn, to exchange," is used of conversation, lit., "what words are these that ye exchange one with another?"