Remove, takes it out of your playlist, leaves it in your song library.
Trash, makes it go away entirely.
USE CAUTION
If you "trash" a song from a playlist, that will also delete it from the library AND any other playlist it might be in.
If you, for example, download a playlist and then decide you don't want it if you "Trash" all the songs, and the playlist happened to contain a song (identical to) a tune in your library already, it would disappear from your library as well as from any other playlists
)BOB
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