ratchet vs rachet up

ratchet is a noun but rachet up is not a noun.

Word	Noun	Adjective	Verb	Adverb
ratchet	Yes	No	Yes	No
rachet up	No	No	Yes	No

As verbs, ratchet and rachet up are synonyms defined as:

Other synonyms of ratchet include ratchet down.

ratchet (noun)	rachet up (noun)
mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction

ratchet (verb)	rachet up (verb)
move by degrees in one direction only	move by degrees in one direction only