oral communication vs speech communication

oral communication and speech communication both are nouns.

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

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

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

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

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