parson vs pastor

parson and pastor both are nouns.

Word	Noun	Adjective	Verb	Adverb
parson	Yes	No	No	No
pastor	Yes	No	No	No

As nouns, parson and pastor are synonyms defined as:

Other synonyms of parson include curate, minister, minister of religion, rector.

parson (noun)	pastor (noun)
a person authorized to conduct religious worship	a person authorized to conduct religious worship