clutches vs seizing

clutches and seizing both are nouns.

Word	Noun	Adjective	Verb	Adverb
clutches	Yes	No	No	No
seizing	Yes	No	No	No

As nouns, seizing is a hypernym of clutches; that is, seizing is a word with a broader meaning than clutches:

clutches: the act of grasping
seizing: the act of gripping something firmly with the hands (or the tentacles)

Other hypernyms of clutches include grasping, prehension, taking hold.

clutches (noun)	seizing (noun)
the act of grasping	the act of gripping something firmly with the hands (or the tentacles)
	small stuff that is used for lashing two or more ropes together