metre vs prosody

metre and prosody both are nouns.

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

As nouns, prosody is a hypernym of metre; that is, prosody is a word with a broader meaning than metre:

Other hypernyms of metre include poetic rhythm, rhythmic pattern.

metre (noun)	prosody (noun)
rhythm as given by division into parts of equal duration	the study of poetic meter and the art of versification
(prosody) the accent in a metrical foot of verse	the patterns of stress and intonation in a language
the basic unit of length adopted under the Systeme International d'Unites (approximately 1.094 yards)	(prosody) a system of versification