Open English Wordnet
Nouns
(n)exchange, interchangethe act of changing one thing for another thing“Adam was promised immortality in exchange for his disobedience”, “there was an interchange of prisoners”
(n)central, telephone exchange, exchangea workplace that serves as a telecommunications facility where lines from telephones can be connected together to permit communication
(n)exchange, interchangereciprocal transfer of equivalent sums of money (especially the currencies of different countries)“he earns his living from the interchange of currency”
(n)substitution, exchange, commutationthe act of putting one thing or person in the place of another:
Verbs
(v)exchange, change, interchangegive to, and receive from, one another“Would you change places with me?”, “We have been exchanging letters for a year”
(v)substitute, replace, interchange, exchangeput in the place of another; switch seemingly equivalent items“the con artist replaced the original with a fake Rembrandt”, “substitute regular milk for fat-free milk”, “synonyms can be interchanged without changing the context's meaning”