pastor vs rector

pastor and rector both are nouns.

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

As nouns, pastor and rector are synonyms defined as:

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

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