modification vs natural event

modification and natural event both are nouns.

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

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

modification: an event that occurs when something passes from one state or phase to another
natural event: an event that happens

Other hypernyms of modification include happening, occurrence, occurrent.

modification (noun)	natural event (noun)
the act of making something different (as e.g. the size of a garment)	an event that happens
slightly modified copy; not an exact copy
an event that occurs when something passes from one state or phase to another
the grammatical relation that exists when a word qualifies the meaning of the phrase