Identical rhyme happens when a poet uses the same word in the rhyming position at the ends of lines or stanzas. Because the sound does not change, it is usually less interesting than true rhyme, but it can be effective when a poet wants emphasis, repetition, or a chant-like effect.
Some writers avoid identical rhyme because it can feel accidental or weak unless the repetition clearly serves the poem's meaning or structure.
Example
The old road leads me back to the same small light,
Again I choose the road, and again the light.