What does "trade" mean?

For those who do not know, trade means I will give you my iTunes music if you give me your iTunes music. I try to trade an equal amount of music with everyone; for example:

1 album = 1 album
1 album = 3 EP
1 album = 10 singles

1 EP = 1 EP
1 EP = 5 singles
1 single = 1 single

ALSO, some singles have 1 song while others have 3 songs. Please try to trade a single or an EP that has a similar amount of songs.

Hope this clears any confusion. Trade also means the same thing as "exchange."