well-informed vs intelligent

well-informed and intelligent both are adjectives.

Word	Noun	Adjective	Verb	Adverb
well-informed	No	Yes	No	No
intelligent	No	Yes	No	No

As adjectives, well-informed and intelligent are synonyms defined as:

well-informed (adjective)	intelligent (adjective)
possessing sound knowledge	having the capacity for thought and reason especially to a high degree
	endowed with the capacity to reason
	exercising or showing good judgment
	possessing sound knowledge