concomitant vs natural event

concomitant and natural event both are nouns.

Word	Noun	Adjective	Verb	Adverb
concomitant	Yes	Yes	No	No
natural event	Yes	No	No	No

As nouns, natural event is a hypernym of concomitant; that is, natural event is a word with a broader meaning than concomitant:

concomitant: an event or situation that happens at the same time as or in connection with another
natural event: an event that happens

Other hypernyms of concomitant include happening, occurrence, occurrent.

concomitant (noun)	natural event (noun)
an event or situation that happens at the same time as or in connection with another	an event that happens

concomitant (adjective)	natural event (adjective)
occurring with or following as a consequence