reciprocity

US /ˌres.ɪˈprɑː.sə.t̬i/
UK /ˌres.ɪˈprɑː.sə.t̬i/
"reciprocity" picture
1.

взаимность, взаимообмен

the practice of exchanging things with others for mutual benefit, especially privileges granted by one country or organization to another.

:
The agreement was based on the principle of reciprocity.
Соглашение было основано на принципе взаимности.
There is a strong sense of reciprocity in their friendship.
В их дружбе присутствует сильное чувство взаимности.