wane vs ebb

wane and ebb both are nouns.

Word	Noun	Adjective	Verb	Adverb
wane	Yes	No	Yes	No
ebb	Yes	No	Yes	No

As nouns, wane and ebb are synonyms defined as:

wane and ebb: a gradual decline (in size or strength or power or number)

Other synonyms of wane include ebbing.

wane (noun)	ebb (noun)
a gradual decline (in size or strength or power or number)	the outward flow of the tide
	a gradual decline (in size or strength or power or number)

wane (verb)	ebb (verb)
become smaller	fall away or decline
decrease in phase	hem in fish with stakes and nets so as to prevent them from going back into the sea with the ebb
grow smaller	flow back or recede