twig vs grasp

twig and grasp both are nouns.

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

As verbs, grasp is a hypernym of twig; that is, grasp is a word with a broader meaning than twig:

Other hypernyms of twig include apprehend, compass, comprehend, dig, get the picture, grok, savvy.

twig (noun)	grasp (noun)
a small branch or division of a branch (especially a terminal division); usually applied to branches of the current or preceding year	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

twig (verb)	grasp (verb)
branch out in a twiglike manner	get the meaning of something
understand, usually after some initial difficulty	hold firmly