Druid vs non-Christian priest

Druid and non-Christian priest both are nouns.

Word	Noun	Adjective	Verb	Adverb
Druid	Yes	No	No	No
non-Christian priest	Yes	No	No	No

As nouns, non-Christian priest is a hypernym of Druid; that is, non-Christian priest is a word with a broader meaning than Druid:

Druid: a pre-Christian priest among the Celts of ancient Gaul and Britain and Ireland
non-Christian priest: a person who performs religious duties and ceremonies in a non-Christian religion

Other hypernyms of Druid include priest.

Druid (noun)	non-Christian priest (noun)
a pre-Christian priest among the Celts of ancient Gaul and Britain and Ireland	a person who performs religious duties and ceremonies in a non-Christian religion