intelligent vs levelheaded

intelligent and levelheaded both are adjectives.

Word	Noun	Adjective	Verb	Adverb
intelligent	No	Yes	No	No
levelheaded	No	Yes	No	No

As adjectives, intelligent and levelheaded are synonyms defined as:

Other synonyms of intelligent include healthy, level-headed, sound.

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