What is the meaning of interchange?

noun

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

verb

• Put in the place of another; switch seemingly equivalent items.
  • usage: "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"
  • synonyms: substitute, replace, exchange
• Give to, and receive from, one another.
  • usage: "Would you change places with me"; "We have been exchanging letters for a year"
  • synonyms: exchange, change
• Cause to change places.
  • usage: "interchange this screw for one of a smaller size"
  • synonyms: counterchange, transpose
• Reverse (a direction, attitude, or course of action. ).
  • synonyms: tack, switch, alternate, flip, flip-flop