I CAN exchange my hand for four big fish hooks (FYI I am some kind of rejected Bond villain)
exchange (yen for euros) change (diapers / a broken heel on your pumps) Unlike the other かえる (替える）、 換える means you are exchanging something for a similar or identical thing
swap, exchange (Japanese/English language exchange, for instance)
to transfer buses/ trains.
What Japanese bathrooms never have.
You exchange stuff with your HANDS,
but you exclaim with your MOUTH.