demitasse vs cafe noir

demitasse and cafe noir both are nouns.

Word	Noun	Adjective	Verb	Adverb
demitasse	Yes	No	No	No
cafe noir	Yes	No	No	No

As nouns, demitasse and cafe noir are synonyms defined as:

demitasse and cafe noir: small cup of strong black coffee without milk or cream

demitasse (noun)	cafe noir (noun)
small coffee cup; for serving black coffee	small cup of strong black coffee without milk or cream
small cup of strong black coffee without milk or cream