exchanges
ex-chang-es
verb
To give something and receive something else in return for it.
"She exchanges gifts with her sister."
noun
Places where shares, currencies, or commodities are bought and sold.
"The stock exchanges opened early today."
noun
Acts of giving something and receiving something else in return.
"There were friendly exchanges between them."
Thesaurus
Synonyms: commutation, substitution, exchange, rally, interchange, central, telephone exchange, convert, commute, switch, switch over, change