Cathari vs religious order

Cathari and religious order both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cathari	Yes	No	No	No
religious order	Yes	No	No	No

As nouns, religious order is a hypernym of Cathari; that is, religious order is a word with a broader meaning than Cathari:

Cathari: a Christian religious sect in southern France in the 12th and 13th centuries; believers in Albigensianism
religious order: a subdivision of a larger religious group

Other hypernyms of Cathari include religious sect, sect.

Cathari (noun)	religious order (noun)
a Christian religious sect in southern France in the 12th and 13th centuries; believers in Albigensianism	a subdivision of a larger religious group