pass on vs ratchet

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

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

As verbs, ratchet is a hyponym of pass on; that is, ratchet is a word with a more specific, narrower meaning than pass on:

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

pass on (verb)	ratchet (verb)
transmit information	move by degrees in one direction only
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