get the picture vs grasp

get the picture is not a noun while grasp is a noun.

Word	Noun	Adjective	Verb	Adverb
get the picture	No	No	Yes	No
grasp	Yes	No	Yes	No

As verbs, get the picture and grasp are synonyms defined as:

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

get the picture (noun)	grasp (noun)
	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

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