taking hold vs grasp

taking hold and grasp both are nouns.

Word	Noun	Adjective	Verb	Adverb
taking hold	Yes	No	No	No
grasp	Yes	No	Yes	No

As nouns, grasp is a hyponym of taking hold; that is, grasp is a word with a more specific, narrower meaning than taking hold:

taking hold: the act of gripping something firmly with the hands (or the tentacles)
grasp: the act of grasping

Other hyponyms of taking hold include clasp, clench, clutch, clutches, grip, hold.

taking hold (noun)	grasp (noun)
the act of gripping something firmly with the hands (or the tentacles)	the act of grasping
	an intellectual hold or understanding
	understanding of the nature or meaning or quality or magnitude of something
	the limit of capability

taking hold (verb)	grasp (verb)
	get the meaning of something
	hold firmly