keep up vs preserve

keep up is not a noun while preserve is a noun.

Word	Noun	Adjective	Verb	Adverb
keep up	No	No	Yes	No
preserve	Yes	No	Yes	No

As verbs, keep up and preserve are synonyms defined as:

keep up and preserve: keep in safety and protect from harm, decay, loss, or destruction

Other synonyms of keep up include conserve, maintain.

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

Other hypernyms of keep up include bear on, carry on, continue, uphold.

keep up (noun)	preserve (noun)
	fruit preserved by cooking with sugar
	a reservation where animals are protected
	a domain that seems to be specially reserved for someone

keep up (verb)	preserve (verb)
prevent from going to bed at night	prevent (food) from rotting
keep informed	keep in safety and protect from harm, decay, loss, or destruction
maintain a required pace or level	to keep up and reserve for personal or special use
keep in safety and protect from harm, decay, loss, or destruction	keep or maintain in unaltered condition; cause to remain or last
lengthen or extend in duration or space	maintain in safety from injury, harm, or danger
	keep undisturbed for personal or private use for hunting, shooting, or fishing