survival vs natural process

survival and natural process both are nouns.

Word	Noun	Adjective	Verb	Adverb
survival	Yes	No	No	No
natural process	Yes	No	No	No

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

survival: a natural process resulting in the evolution of organisms best adapted to the environment
natural process: a process existing in or produced by nature (rather than by the intent of human beings)

Other hypernyms of survival include action, activity, natural action.

survival (noun)	natural process (noun)
something that survives	a process existing in or produced by nature (rather than by the intent of human beings)
a natural process resulting in the evolution of organisms best adapted to the environment
a state of surviving; remaining alive