take hold vs grab

take hold is not a noun while grab is a noun.

Word	Noun	Adjective	Verb	Adverb
take hold	No	No	Yes	No
grab	Yes	No	Yes	No

As verbs, grab is a hyponym of take hold; that is, grab is a word with a more specific, narrower meaning than take hold:

take hold (noun)	grab (noun)
	the act of catching an object with the hands
	a mechanical device for gripping an object

take hold (verb)	grab (verb)
take into your hands deliberately	capture the attention or imagination of
assume control	take hold of so as to seize or restrain or stop the motion of
	take or grasp suddenly
	make a grasping or snatching motion with the hand
	get hold of or seize quickly and easily
	obtain illegally or unscrupulously