knowledgeable vs knowing

knowledgeable is not a noun while knowing is a noun.

Word	Noun	Adjective	Verb	Adverb
knowledgeable	No	Yes	No	No
knowing	Yes	Yes	No	No

As adjectives, knowledgeable and knowing are synonyms defined as:

knowledgeable and knowing: highly educated; having extensive information or understanding

Other synonyms of knowledgeable include learned, lettered, well-educated, well-read.

As adjectives, knowledgeable and knowing are synonyms defined as:

knowledgeable (noun)	knowing (noun)
	a clear and certain mental apprehension

knowledgeable (adjective)	knowing (adjective)
highly educated; having extensive information or understanding	highly educated; having extensive information or understanding
thoroughly acquainted through study or experience	evidencing the possession of inside information
alert and fully informed	characterized by conscious design or purpose
	alert and fully informed