marginalia vs scholia

marginalia and scholia both are nouns.

Word	Noun	Adjective	Verb	Adverb
marginalia	Yes	No	No	No
scholia	Yes	No	No	No

As nouns, scholia is a hyponym of marginalia; that is, scholia is a word with a more specific, narrower meaning than marginalia:

marginalia: notes written in the margin
scholia: a marginal note written by a scholiast (a commentator on ancient or classical literature)

Other hyponyms of marginalia include scholium.

marginalia (noun)	scholia (noun)
notes written in the margin	a marginal note written by a scholiast (a commentator on ancient or classical literature)