selector vs electrical switch

selector and electrical switch both are nouns.

Word	Noun	Adjective	Verb	Adverb
selector	Yes	No	No	No
electrical switch	Yes	No	No	No

As nouns, electrical switch is a hypernym of selector; that is, electrical switch is a word with a broader meaning than selector:

selector: a switch that is used to select among alternatives
electrical switch: control consisting of a mechanical or electrical or electronic device for making or breaking or changing the connections in a circuit

Other hypernyms of selector include electric switch, switch.

selector (noun)	electrical switch (noun)
a switch that is used to select among alternatives	control consisting of a mechanical or electrical or electronic device for making or breaking or changing the connections in a circuit
a person who chooses or selects out