mud brick vs brick

mud brick and brick both are nouns.

Word	Noun	Adjective	Verb	Adverb
mud brick	Yes	No	No	No
brick	Yes	No	Yes	No

As nouns, brick is a hypernym of mud brick; that is, brick is a word with a broader meaning than mud brick:

mud brick: a brick made from baked mud
brick: rectangular block of clay baked by the sun or in a kiln; used as a building or paving material

mud brick (noun)	brick (noun)
a brick made from baked mud	rectangular block of clay baked by the sun or in a kiln; used as a building or paving material
	a good fellow; helpful and trustworthy

mud brick (verb)	brick (verb)
	To stop working (of an electronic device)