well-read vs knowledgeable

well-read and knowledgeable both are adjectives.

Word	Noun	Adjective	Verb	Adverb
well-read	No	Yes	No	No
knowledgeable	No	Yes	No	No

As adjectives, well-read and knowledgeable are synonyms defined as:

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

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

well-read (adjective)	knowledgeable (adjective)
highly educated; having extensive information or understanding	highly educated; having extensive information or understanding
well informed or deeply versed through reading	thoroughly acquainted through study or experience
	alert and fully informed