The pattern in which similar end sounds occur a poem is called?

The pattern in which similar end sounds occur in a poem is called rhyme.

There are different types of rhyme, like:

* Perfect rhyme: Words have the same vowel sound and ending consonant sound (e.g., cat/hat, bright/light)

* Near rhyme/Slant rhyme/Half rhyme: Words have similar but not identical sounds (e.g., cat/cot, bright/bite)

* Eye rhyme: Words look like they should rhyme but don't sound alike (e.g., love/move)

Rhyme is a key element in poetry, adding rhythm, musicality, and emphasis to the lines.