ratchet vs pass on

ratchet is a noun but pass on is not a noun.

Word	Noun	Adjective	Verb	Adverb
ratchet	Yes	No	Yes	No
pass on	No	No	Yes	No

As verbs, pass on is a hypernym of ratchet; that is, pass on is a word with a broader meaning than ratchet:

Other hypernyms of ratchet include advance, go on, march on, move on, progress.

ratchet (noun)	pass on (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)	pass on (verb)
move by degrees in one direction only	transmit information
	cause to be distributed
	move forward, also in the metaphorical sense
	give to or transfer possession of
	place into the hands or custody of
	transmit (knowledge or skills)
	refer to another person for decision or judgment