General   (General discussion, talk about anything.)

assonance: n

1. (Literary & Literary Critical Terms) the use of the same vowel sound with different consonants or the same consonant with different vowels in successive words or stressed syllables, as in a line of verse.
Examples are time and light or mystery and mastery

2. partial correspondence; rough similarity

Or as Rita says in Educating Rita 'assonance is getting the rhyme wrong.'

I saw the play at Wigan Little Theatre last night and it was brilliant.