speech communication vs spoken communication

speech communication and spoken communication both are nouns.

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

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

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

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

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