initial rhyme vs beginning rhyme

initial rhyme and beginning rhyme both are nouns.

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

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

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

Other synonyms of initial rhyme include alliteration, head rhyme.

initial rhyme (noun)	beginning 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