In MusicBrainzTerminology, an album is an entry in the album table of the database. For CD's, an album represents 1 CD. For vinyl and cassettes, an album represents both sides of a record or cassette.
An album has an AlbumTitle and consists of one or more Tracks. Each album has one AlbumArtist who is the PrimaryArtist associated with that album. Other artists can be associated with an album using AdvancedRelationships.