go up vs skyrocket

go up is not a noun while skyrocket is a noun.

Word	Noun	Adjective	Verb	Adverb
go up	No	No	Yes	No
skyrocket	Yes	No	Yes	No

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

go up (noun)	skyrocket (noun)
	sends a firework display high into the sky
	propels bright light high in the sky, or used to propel a lifesaving line or harpoon

go up (verb)	skyrocket (verb)
increase in value or to a higher point	shoot up abruptly, like a rocket
burn completely; be consumed or destroyed by fire
move upward
go upward with gradual or continuous progress
be erected, built, or constructed
move towards
travel up