interchanging

1. put in the place of another; switch seemingly equivalent itemsExamples: "the con artist replaced the original with a fake Rembrandt"; "substitute regular milk with fat-free milk"; "synonyms can be interchanged without a changing the context's meaning"Synonyms: exchange, interchange, replace, substitute

2. give to, and receive from, one anotherExamples: "Would you change places with me?"; "We have been exchanging letters for a year"Synonyms: change, exchange, interchange

3. cause to change placesExamples: "interchange this screw for one of a smaller size"Synonyms: counterchange, interchange, transpose

4. reverse (a direction, attitude, or course of action)Synonyms: alternate, flip, flip-flop, interchange, switch, tack