run-up vs increase

run-up and increase both are nouns.

Word	Noun	Adjective	Verb	Adverb
run-up	Yes	No	No	No
increase	Yes	No	Yes	No

As nouns, increase is a hypernym of run-up; that is, increase is a word with a broader meaning than run-up:

run-up (noun)	increase (noun)
the approach run during which an athlete gathers speed	the act of increasing something
a substantial increase over a relatively short period of time	the amount by which something increases
	a change resulting in an increase
	a process of becoming larger or longer or more numerous or more important
	a quantity that is added

run-up (verb)	increase (verb)
	become bigger or greater in amount
	make bigger or more