ratchet vs ratchet screwdriver

ratchet and ratchet screwdriver both are nouns.

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

ratchet (noun)	ratchet screwdriver (noun)
mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction	a screwdriver with a ratchet (so the blade turns in only one direction) and a spiral in the handle (so the blade rotates) with downward pressure on the handle

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