learned vs knowledgeable

learned and knowledgeable both are adjectives.

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

As adjectives, learned and knowledgeable are synonyms defined as:

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

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

learned (adjective)	knowledgeable (adjective)
established by conditioning or learning	highly educated; having extensive information or understanding
highly educated; having extensive information or understanding	thoroughly acquainted through study or experience
having or showing profound knowledge	alert and fully informed