selection vs natural selection

selection and natural selection both are nouns.

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

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

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

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

selection (noun)	natural selection (noun)
the act of choosing or selecting	a natural process resulting in the evolution of organisms best adapted to the environment
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