ratchet vs detent

ratchet and detent both are nouns.

Word	Noun	Adjective	Verb	Adverb
ratchet	Yes	No	Yes	No
detent	Yes	No	No	No

ratchet (noun)	detent (noun)
mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction	a hinged catch that fits into a notch of a ratchet to move a wheel forward or prevent it from moving backward

ratchet (verb)	detent (verb)
move by degrees in one direction only