spoken communication vs spoken language

spoken communication and spoken language both are nouns.

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

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

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

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

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