1.
verse (of a song); stanza
the section of a song that tells the story and leads up to the chorus; commonly used in hip-hop and pop music
Music terminology
In song structure, バース (verse) is the narrative section that typically changes each time, as opposed to the サビ/コーラス (chorus) which repeats.
Song structure terms
Hip-hop context
In hip-hop and rap, バース specifically refers to a rapper's verse—their individual section of lyrics in a song.
Usage
In Japanese pop music, 番 is often used (1番, 2番) to refer to the verse sections, while バース is more common in hip-hop.