alliteration vs initial rhyme

alliteration and initial rhyme both are nouns.

Word	Noun	Adjective	Verb	Adverb
alliteration	Yes	No	No	No
initial rhyme	Yes	No	No	No

As nouns, alliteration and initial rhyme are synonyms defined as:

alliteration and initial rhyme: use of the same consonant at the beginning of each stressed syllable in a line of verse

Other synonyms of alliteration include beginning rhyme, head rhyme.

alliteration (noun)	initial rhyme (noun)
use of the same consonant at the beginning of each stressed syllable in a line of verse	use of the same consonant at the beginning of each stressed syllable in a line of verse