clinker vs clinker brick

clinker and clinker brick both are nouns.

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

As nouns, clinker and clinker brick are synonyms defined as:

clinker (noun)	clinker brick (noun)
a hard brick used as a paving stone	a hard brick used as a paving stone
a fragment of incombustible matter left after a wood or coal or charcoal fire

clinker (verb)	clinker brick (verb)
turn to clinker or form clinker under excessive heat in burning
clear out the cinders and clinker from