well-educated vs knowing

well-educated is not a noun while knowing is a noun.

Word	Noun	Adjective	Verb	Adverb
well-educated	No	Yes	No	No
knowing	Yes	Yes	No	No

As adjectives, well-educated and knowing are synonyms defined as:

well-educated and knowing: highly educated; having extensive information or understanding

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

well-educated (noun)	knowing (noun)
	a clear and certain mental apprehension

well-educated (adjective)	knowing (adjective)
highly educated; having extensive information or understanding	highly educated; having extensive information or understanding
	evidencing the possession of inside information
	characterized by conscious design or purpose
	alert and fully informed