Final answer:
When two words that sound the same are at the end of lines in poetry, it's called end rhyme. An example is found in couplets, like those ending Shakespeare's sonnets.
Step-by-step explanation:
When two words which sound the same are the last words on their lines of poetry, it is called end rhyme. This is the most common form of rhyme found in poetry, where the rhyme occurs on stressed syllables at the ends of verse lines. A specific example of this would be a couplet, which is a pair of end-rhyming verse lines, usually of the same length. For instance, most of Shakespeare's sonnets end with a couplet. Here's an example from Sonnet 18:
So long as men can breathe or eyes can see, (13)
So long lives this, and this gives life to thee. (14)
End rhyme contributes to the musicality of the poem and can enhance the memorability of its lines.