pass on vs plough on

pass on and plough on both are verbs.

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

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

pass on (verb)	plough on (verb)
transmit information	continue moving forward
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