casting vs selection

casting and selection both are nouns.

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

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

Other hypernyms of casting include choice, option, pick.

casting (noun)	selection (noun)
the act of creating something by casting it in a mold	the act of choosing or selecting
the act of throwing a fishing line out over the water by means of a rod and reel	the person or thing chosen or selected
the choice of actors to play particular roles in a play or movie	a passage selected from a larger work
object formed by a mold	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