beginning rhyme vs alliteration

beginning rhyme and alliteration both are nouns.

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

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

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

Other synonyms of beginning rhyme include head rhyme, initial rhyme.

beginning rhyme (noun)	alliteration (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