successiveness vs rain

successiveness and rain both are nouns.

Word	Noun	Adjective	Verb	Adverb
successiveness	Yes	No	No	No
rain	Yes	No	Yes	No

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

Other hyponyms of successiveness include pelting, rotation, row, run.

successiveness (noun)	rain (noun)
a following of one thing after another in time	anything happening rapidly or in quick successive
	water falling in drops from vapor condensed in the atmosphere
	drops of fresh water that fall as precipitation from clouds

successiveness (verb)	rain (verb)
	precipitate as rain