sandwich vs get up

sandwich is a noun but get up is not a noun.

Word	Noun	Adjective	Verb	Adverb
sandwich	Yes	No	Yes	No
get up	No	No	Yes	No

As verbs, get up is a hypernym of sandwich; that is, get up is a word with a broader meaning than sandwich:

Other hypernyms of sandwich include devise, machinate, organise, organize, prepare.

sandwich (noun)	get up (noun)
two (or more) slices of bread with a filling between them

sandwich (verb)	get up (verb)
insert or squeeze tightly between two people or objects	get up and out of bed
make into a sandwich	cause to rise
	put on special clothes to appear particularly appealing and attractive
	develop
	study intensively, as before an exam
	arrange by systematic planning and united effort
	raise from a lower to a higher position
	rise to one's feet