genial vs mental

genial and mental both are adjectives.

Word	Noun	Adjective	Verb	Adverb
genial	No	Yes	No	No
mental	No	Yes	No	No

As adjectives, genial and mental are synonyms defined as:

genial and mental: of or relating to the chin or median part of the lower jaw

genial (adjective)	mental (adjective)
of or relating to the chin or median part of the lower jaw	involving the mind or an intellectual process
diffusing warmth and friendliness	of or relating to the mind
agreeable, conducive to comfort	of or relating to the chin- or liplike structure in insects and certain mollusks
	of or relating to the chin or median part of the lower jaw
	affected by a disorder of the mind