Kokka Shinto vs religious sect

Kokka Shinto and religious sect both are nouns.

Word	Noun	Adjective	Verb	Adverb
Kokka Shinto	Yes	No	No	No
religious sect	Yes	No	No	No

As nouns, religious sect is a hypernym of Kokka Shinto; that is, religious sect is a word with a broader meaning than Kokka Shinto:

Kokka Shinto: the branch of Shinto recognized as the official state religion of Japan
religious sect: a subdivision of a larger religious group

Other hypernyms of Kokka Shinto include religious order, sect.

Kokka Shinto (noun)	religious sect (noun)
the branch of Shinto recognized as the official state religion of Japan	a subdivision of a larger religious group