clinker block vs cinder block

clinker block and cinder block both are nouns.

Word	Noun	Adjective	Verb	Adverb
clinker block	Yes	No	No	No
cinder block	Yes	No	No	No

As nouns, clinker block and cinder block are synonyms defined as:

clinker block and cinder block: a light concrete building block made with cinder aggregate

Other synonyms of clinker block include breeze block.

clinker block (noun)	cinder block (noun)
a light concrete building block made with cinder aggregate	a light concrete building block made with cinder aggregate