A sonnet has 14 lines and is written in iambic pentameter.It has a specific rhyme scheme and a “volta” or a specific turn. (Ex-Shall I compare thee to a summer’s day?” —William Shakespeare “I carry your heart with me)
An assonance is the repitition of the sound of a vowel in nonrhyming stressed syllables near enough to each other for the echo to be discernible (ex- penitence, reticence ).