spoken language vs spoken communication

spoken language and spoken communication both are nouns.

Word	Noun	Adjective	Verb	Adverb
spoken language	Yes	No	No	No
spoken communication	Yes	No	No	No

As nouns, spoken language and spoken communication are synonyms defined as:

spoken language and spoken communication: (language) communication by word of mouth

Other synonyms of spoken language include language, oral communication, speech, speech communication, voice communication.

spoken language (noun)	spoken communication (noun)
(language) communication by word of mouth	(language) communication by word of mouth