diminution vs ebb

diminution and ebb both are nouns.

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

As nouns, ebb is a hyponym of diminution; that is, ebb is a word with a more specific, narrower meaning than diminution:

diminution (noun)	ebb (noun)
the act of decreasing or reducing something	the outward flow of the tide
the statement of a theme in notes of lesser duration (usually half the length of the original)	a gradual decline (in size or strength or power or number)
change toward something smaller or lower

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