Meaning of “exchange” - Learner’s Dictionary

exchange

noun uk us /ɪksˈtʃeɪndʒ/
GIVING [ C, U ]

B1 an occasion when you give something to someone and they give you something else:

an exchange of ideas/information
They were given food and shelter in exchange for work.
STUDENTS [ C ]

B1 an arrangement by which students and teachers from one country go to stay with students and teachers in another:

Janet has happy memories of going on an exchange to France.
CONVERSATION [ C ]

a short conversation or argument:

There were angry exchanges between the police and demonstrators.
→ See also the stock exchange

(Definition of “exchange noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)