существительное
взаимность
Основнойa situation in which two people or groups give or do the same things for each other
Their friendship is based on trust and reciprocity.C2
Их дружба основана на доверии и взаимности.
Reciprocity is important in any partnership.C2
Взаимность важна в любом партнёрстве.
The agreement depends on reciprocity between both sides.C2
Соглашение зависит от взаимности с обеих сторон.