Canto (noun)

1. A division or section of a long poem, usually divided by subject matter or theme.
2. A major division of an epic poem, such as the Inferno in Dante's Divine Comedy.

Origin:

The word "canto" comes from the italian word "canto" meaning "song" or "singing" which is derived from the latin word "cantus" meaning "song" or "chant".

Examples:

1. The poem was divided into three cantos.
2. Each canto of the poem dealt with a different subject.
3. The first canto of the Divine Comedy is called "Inferno".
4. The poet wrote the poem in cantos, each canto telling a different story.
5. The poem was a long one, divided into several cantos, each dealing with a different theme.