perfect rhyme

perfect rhyme noun

1. rhyme of two words spelled or pronounced identically but differing in meaning, as rain, reign; rich rhyme.
2. full rhyme.

British Dictionary definitions for perfect rhyme perfect rhyme noun

1. Also called: full rhyme rhyme between words in which the stressed vowels and any succeeding consonants are identical although the consonants preceding the stressed vowels may be different, as between part/hart or believe/conceive
2. a rhyme between two words that are pronounced the same although differing in meaning, as in bough/bow