natural selection vs survival

natural selection and survival both are nouns.

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

As nouns, natural selection and survival are synonyms defined as:

natural selection and survival: a natural process resulting in the evolution of organisms best adapted to the environment

Other synonyms of natural selection include selection, survival of the fittest.

natural selection (noun)	survival (noun)
a natural process resulting in the evolution of organisms best adapted to the environment	something that survives
	a natural process resulting in the evolution of organisms best adapted to the environment
	a state of surviving; remaining alive