unknowing vs unwitting

unknowing is a noun but unwitting is not a noun.

Word	Noun	Adjective	Verb	Adverb
unknowing	Yes	Yes	No	No
unwitting	No	Yes	No	No

As adjectives, unknowing and unwitting are synonyms defined as:

unknowing and unwitting: unaware because of a lack of relevant information or knowledge

Other synonyms of unknowing include ignorant, unknowledgeable.

unknowing (noun)	unwitting (noun)
ignorance (especially of orthodox beliefs)

unknowing (adjective)	unwitting (adjective)
unaware because of a lack of relevant information or knowledge	not aware or knowing
	unaware because of a lack of relevant information or knowledge
	not done with purpose or intent