black pudding vs blood pudding

black pudding and blood pudding both are nouns.

Word	Noun	Adjective	Verb	Adverb
black pudding	Yes	No	No	No
blood pudding	Yes	No	No	No

As nouns, black pudding and blood pudding are synonyms defined as:

black pudding and blood pudding: a black sausage containing pig's blood and other ingredients

Other synonyms of black pudding include blood sausage.

black pudding (noun)	blood pudding (noun)
a black sausage containing pig's blood and other ingredients	a black sausage containing pig's blood and other ingredients