tray vs receptacle

tray and receptacle both are nouns.

Word	Noun	Adjective	Verb	Adverb
tray	Yes	No	No	No
receptacle	Yes	No	No	No

As nouns, receptacle is a hypernym of tray; that is, receptacle is a word with a broader meaning than tray:

tray: an open receptacle for holding or displaying or serving articles or food
receptacle: a container that is used to put or keep things in

tray (noun)	receptacle (noun)
an open receptacle for holding or displaying or serving articles or food	a container that is used to put or keep things in
	an electrical (or electronic) fitting that is connected to a source of power and equipped to receive an insert
	enlarged tip of a stem that bears the floral parts