I am building a website where you can give a thing you own and get another thing of the same kind in return. Say you give a stamp in exchange
of for another stamp, so you change stamps with someone. Stamp is just an example, it could be a book, a game etc. Fundamentally what you do is giving and taking things of the same kind, you cannot give a book and get a game. You give a book, you get a book.
So, what I am wondering is which word would be the best to indicate this kind of exchange. Swap of Trade? What is the main difference between these two words?
Thanks a lot...