mentum vs lineament

mentum and lineament both are nouns.

Word	Noun	Adjective	Verb	Adverb
mentum	Yes	No	No	No
lineament	Yes	No	No	No

As nouns, lineament is a hypernym of mentum; that is, lineament is a word with a broader meaning than mentum:

mentum: the protruding part of the lower jaw
lineament: the characteristic parts of a person's face: eyes and nose and mouth and chin

Other hypernyms of mentum include feature.

mentum (noun)	lineament (noun)
a projection below the mouth of certain mollusks that resembles a chin	the characteristic parts of a person's face: eyes and nose and mouth and chin
the protruding part of the lower jaw	a characteristic property that defines the apparent individual nature of something
a projection like a chin formed by the sepals and base of the column in some orchids