natural selection vs selection

natural selection and selection both are nouns.

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

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

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

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

natural selection (noun)	selection (noun)
a natural process resulting in the evolution of organisms best adapted to the environment	the act of choosing or selecting
	the person or thing chosen or selected
	a passage selected from a larger work
	an assortment of things from which a choice can be made
	a natural process resulting in the evolution of organisms best adapted to the environment