speech vs prosody

speech and prosody both are nouns.

Word	Noun	Adjective	Verb	Adverb
speech	Yes	No	No	No
prosody	Yes	No	No	No

As nouns, prosody is a hyponym of speech; that is, prosody is a word with a more specific, narrower meaning than speech:

speech (noun)	prosody (noun)
the mental faculty or power of vocal communication	the study of poetic meter and the art of versification
(language) communication by word of mouth	the patterns of stress and intonation in a language
the act of delivering a formal spoken communication to an audience	(prosody) a system of versification
words making up the dialogue of a play
a lengthy rebuke
the exchange of spoken words
your characteristic style or manner of expressing yourself orally
something spoken