Sure, I'd be happy to explain the difference between a Playlist and a Library in Apple Music.

1. Library: This is where all your music is stored. It includes songs you've added from Apple Music, songs you've purchased from iTunes, and any other music you've imported from CDs or other sources. You can browse your library by categories such as Artists, Albums, Songs, and recently added. You can also create your own playlists within your library.

2. Playlist: This is a custom collection of songs that you create. You can add any song from your library to a playlist. You can also add songs directly to a playlist without adding them to your library. Playlists can be a great way to organize your music for different moods, activities, or events. You can also share your playlists with others and follow playlists created by other Apple Music users.

In summary, your library is like your entire music collection, and playlists are like mixtapes you make from that collection.