exchange

chemical process in which one atom or ion or group changes places with another

a mutual expression of views (especially an unpleasant one)

• “they had a bitter exchange”

the act of changing one thing for another thing

• “Adam was promised immortality in exchange for his disobedience”
• “there was an exchange of prisoners”

the act of giving something in return for something received

• “deductible losses on sales or exchanges of property are allowable”

a workplace that serves as a telecommunications facility where lines from telephones can be connected together to permit communication

a workplace for buying and selling; open only to members

(sports) an unbroken sequence of several successive strokes

• “after a short rally Connors won the point”

reciprocal transfer of equivalent sums of money especially the currencies of different countries

• “he earns his living from the interchange of currency”

the act of putting one thing or person in the place of another: "he sent Smith in for Jones but the substitution came too late to help"

(chess) gaining (or losing) a rook in return for a knight or bishop

• “black lost the exchange”

(chess) the capture by both players (usually on consecutive moves) of pieces of equal value

• “the endgame began after the exchange of queens”

give to, and receive from, one another

• “Would you change places with me?”
• “We have been exchanging letters for a year”

exchange or replace with another, usually of the same kind or category

• “Could you convert my dollars into pounds?”
• “He changed his name”
• “convert centimeters into inches”
• “convert holdings into shares”

change over, change around, or switch over

hand over one and receive another, approximately equivalent

• “exchange prisoners”
• “exchange employees between branches of the company”

exchange a penalty for a less severe one