thunder mug vs receptacle

thunder mug and receptacle both are nouns.

Word	Noun	Adjective	Verb	Adverb
thunder mug	Yes	No	No	No
receptacle	Yes	No	No	No

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

thunder mug (noun)	receptacle (noun)
a receptacle for urination or defecation in the bedroom	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