patently vs plainly

patently and plainly both are adverbs.

Word	Noun	Adjective	Verb	Adverb
patently	No	No	No	Yes
plainly	No	No	No	Yes

As adverbs, patently and plainly are synonyms defined as:

patently and plainly: unmistakably (`plain' is often used informally for `plainly')

Other synonyms of patently include apparently, evidently, manifestly, obviously, plain.

patently (adverb)	plainly (adverb)
unmistakably (`plain' is often used informally for `plainly')	unmistakably (`plain' is often used informally for `plainly')
	in a simple manner; without extravagance or embellishment