In short, lyrics are the words to a song. The singular form of the word “lyrics,” i.e. lyric, can be used to refer to a certain line in the whole of a song’s lyrics. Certain sections in the song structure may involve the repetition of song lyrics. This includes, for instance, the chorus of a song. The term “lyrics” is used more broadly in the context of poetry as well. In order to make the distinction between lyrics of a song and lyrics in the context of poetry in general, one may also say “song lyrics.”