lapse vs march on

lapse is a noun but march on is not a noun.

Word	Noun	Adjective	Verb	Adverb
lapse	Yes	No	Yes	No
march on	No	No	Yes	No

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

Other hypernyms of lapse include advance, go on, move on, pass on, progress.

lapse (noun)	march on (noun)
a mistake resulting from inattention
a failure to maintain a higher state
a break or intermission in the occurrence of something

lapse (verb)	march on (verb)
go back to bad behavior	move forward, also in the metaphorical sense
drop to a lower level, as in one's morals or standards
end, at least for a long time
for time to move forward
pass into a specified state or condition; sink into
let slip