increase vs rev up

increase is a noun but rev up is not a noun.

Word	Noun	Adjective	Verb	Adverb
increase	Yes	No	Yes	No
rev up	No	No	Yes	No

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

increase (noun)	rev up (noun)
the act of increasing something
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

increase (verb)	rev up (verb)
become bigger or greater in amount	increase the number of rotations per minute
make bigger or more	speed up