voting vs selection

voting and selection both are nouns.

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

As nouns, selection is a hypernym of voting; that is, selection is a word with a broader meaning than voting:

voting: a choice that is made by counting the number of people in favor of each alternative
selection: the act of choosing or selecting

Other hypernyms of voting include choice, option, pick.

voting (noun)	selection (noun)
a choice that is made by counting the number of people in favor of each alternative	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