elapse vs lapse

elapse is not a noun while lapse is a noun.

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

As verbs, elapse and lapse are synonyms defined as:

Other synonyms of elapse include glide by, go along, go by, pass, slide by, slip away, slip by.

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

elapse (verb)	lapse (verb)
for time to move forward	go back to bad behavior
	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