interchange

(n) a junction of highways on different levels that permits traffic to move from one to another without crossing traffic streams
(n) mutual interaction; the activity of reciprocating or exchanging (especially information) give-and-take, reciprocation,
(n) the act of changing one thing for another thing
- Adam was promised immortality in exchange for his disobedience
- there was an interchange of prisoners
exchange,
(n) reciprocal transfer of equivalent sums of money (especially the currencies of different countries)
- he earns his living from the interchange of currency
exchange,

(v) 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
substitute, replace, exchange,
(v) give to, and receive from, one another
- Would you change places with me?
- We have been exchanging letters for a year
exchange, change,
(v) cause to change places
- interchange this screw for one of a smaller size
counterchange, transpose,
(v) reverse (a direction, attitude, or course of action) flip-flop, alternate, tack, switch, flip,

substitute replace exchange change give-and-take reciprocation counterchange transpose flip-flop alternate tack switch flip

interchangeability interchangeable interchangeableness interchangeably