grasp vs clench

grasp and clench both are nouns.

Word	Noun	Adjective	Verb	Adverb
grasp	Yes	No	Yes	No
clench	Yes	No	Yes	No

As nouns, grasp and clench are synonyms defined as:

Other synonyms of grasp include clasp, clutch, clutches, grip, hold.

grasp (noun)	clench (noun)
the act of grasping	the act of grasping
an intellectual hold or understanding	a small slip noose made with seizing
understanding of the nature or meaning or quality or magnitude of something
the limit of capability

grasp (verb)	clench (verb)
get the meaning of something	hold in a tight grasp
hold firmly	squeeze together tightly