lapse vs revert

lapse is a noun but revert is not a noun.

Word	Noun	Adjective	Verb	Adverb
lapse	Yes	No	Yes	No
revert	No	No	Yes	No

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

Other hypernyms of lapse include regress, retrovert, return, turn back.

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

lapse (verb)	revert (verb)
go back to bad behavior	go back to a previous state
drop to a lower level, as in one's morals or standards	undergo reversion, as in a mutation
end, at least for a long time
for time to move forward
pass into a specified state or condition; sink into
let slip