plainly vs simply

plainly and simply both are adverbs.

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

As adverbs, plainly and simply are synonyms defined as:

plainly and simply: in a simple manner; without extravagance or embellishment

plainly (adverb)	simply (adverb)
unmistakably (`plain' is often used informally for `plainly')	and nothing more
in a simple manner; without extravagance or embellishment	in a simple manner; without extravagance or embellishment
	absolutely; altogether; really
	(used for emphasis) absolutely