What is the difference between alliteration and consonance?

a.
alliteration deals with vowel sounds and consonance deals with consonants.
b.
alliteration deals with initial consonant sounds only.
c.
consonance deals with initial consonant sounds only.
d.
alliteration is the opposite of consonance.

Though both alliteration and consonance refer to repeated sounds between words, alliteration can refer to either vowel or consonant sounds usually found at the beginning of each word, and consonance refers specifically to repetition in consonant sounds that is often found in the middle or at the end of each word.

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