To rhyme is to end in the same final vowel sound and consonant sound, if any, as another word. For example, "crown" rhymes with "frown".
Rhyming is a favored technique of poets and playwrights.
Where words have the same vowel sound but different consonant sounds, e.g. "space" and "flame", they are said to half-rhyme or assonate.
Online dictionaries that provide words that rhyme with an inputted word are freely available.[1]