nascency vs modification

nascency and modification both are nouns.

Word	Noun	Adjective	Verb	Adverb
nascency	Yes	No	No	No
modification	Yes	No	No	No

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

nascency: the event of being born
modification: an event that occurs when something passes from one state or phase to another

Other hypernyms of nascency include alteration, change.

nascency (noun)	modification (noun)
the event of being born	the act of making something different (as e.g. the size of a garment)
	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