husband-wife privilege vs marital communications privilege

husband-wife privilege and marital communications privilege both are nouns.

Word	Noun	Adjective	Verb	Adverb
husband-wife privilege	Yes	No	No	No
marital communications privilege	Yes	No	No	No

As nouns, husband-wife privilege and marital communications privilege are synonyms defined as:

husband-wife privilege and marital communications privilege: neither spouse can divulge confidential communications from the other while they were married

husband-wife privilege (noun)	marital communications privilege (noun)
neither spouse can divulge confidential communications from the other while they were married	neither spouse can divulge confidential communications from the other while they were married