assonance
🇺🇸
/ˈæsənəns/
🇬🇧
/ˈæsənəns/
A literary device where two words close together have the same vowel sound but different consonants, or the same consonants but different vowels.
In the poem, the use of assonance in the lines 'The rain in Spain falls mainly on the plain' creates a pleasing rhythm.