praiseworthily vs commendable

praiseworthily is not an adjective while commendable is an adjective.

Word	Noun	Adjective	Verb	Adverb
praiseworthily	No	No	No	Yes
commendable	No	Yes	No	Yes

As adverbs, praiseworthily and commendable are synonyms defined as:

Other synonyms of praiseworthily include admirably, laudably.

praiseworthily (adjective)	commendable (adjective)
	worthy of high praise

praiseworthily (adverb)	commendable (adverb)
in an admirable manner	in an admirable manner