High Church vs religious sect

High Church and religious sect both are nouns.

Word	Noun	Adjective	Verb	Adverb
High Church	Yes	No	No	No
religious sect	Yes	No	No	No

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

High Church: a group in the Anglican Church that emphasizes the Catholic tradition (especially in sacraments and rituals and obedience to church authority)
religious sect: a subdivision of a larger religious group

Other hypernyms of High Church include religious order, sect.

High Church (noun)	religious sect (noun)
a group in the Anglican Church that emphasizes the Catholic tradition (especially in sacraments and rituals and obedience to church authority)	a subdivision of a larger religious group