maybe vs peradventure

maybe is not a noun while peradventure is a noun.

Word	Noun	Adjective	Verb	Adverb
maybe	No	No	No	Yes
peradventure	Yes	No	No	Yes

As adverbs, maybe and peradventure are synonyms defined as:

Other synonyms of maybe include mayhap, perchance, perhaps, possibly.

maybe (noun)	peradventure (noun)
	doubt or uncertainty as to whether something is the case

maybe (adverb)	peradventure (adverb)
by chance	by chance