pastoral vs missive

pastoral and missive both are nouns.

Word	Noun	Adjective	Verb	Adverb
pastoral	Yes	Yes	No	No
missive	Yes	No	No	No

As nouns, missive is a hypernym of pastoral; that is, missive is a word with a broader meaning than pastoral:

Other hypernyms of pastoral include letter.

pastoral (noun)	missive (noun)
a musical composition that evokes rural life	a written message addressed to a person or organization
a literary work idealizing the rural life (especially the life of shepherds)
a letter from a pastor to the congregation

pastoral (adjective)	missive (adjective)
of or relating to a pastor
relating to shepherds or herdsmen or devoted to raising sheep or cattle
(used with regard to idealized country life) idyllically rustic