get up vs sandwich

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

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

As verbs, sandwich is a hyponym of get up; that is, sandwich is a word with a more specific, narrower meaning than get up:

Other hyponyms of get up include mount, put on, lay, set up, spatchcock, embattle, fix.

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

get up (verb)	sandwich (verb)
get up and out of bed	insert or squeeze tightly between two people or objects
cause to rise	make into a sandwich
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