reciprocal transfer of equivalent sums of money (especially the currencies of different countries) "he earns his living from the interchange of currency"
the act of changing one thing for another thing "Adam was promised immortality in exchange for his disobedience" "there was an interchange of prisoners"
mutual interaction
the activity of reciprocating or exchanging (especially information) - give and take
a junction of highways on different levels that permits traffic to move from one to another without crossing traffic streams
Verb
reverse (a direction, attitude, or course of action) - flip flop
cause to change places "interchange this screw for one of a smaller size"
give to, and receive from, one another "Would you change places with me?" "We have been exchanging letters for a year"
put in the place of another
switch seemingly equivalent items "the con artist replaced the original with a fake Rembrandt" "substitute regular milk with fat-free milk" "synonyms can be interchanged without a changing the context's meaning"