Sunni Islam vs religious order

Sunni Islam and religious order both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sunni Islam	Yes	No	No	No
religious order	Yes	No	No	No

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

Other hypernyms of Sunni Islam include religious sect, sect.

Sunni Islam (noun)	religious order (noun)
one of the two main branches of orthodox Islam	a subdivision of a larger religious group