Haredi vs sect

Haredi and sect both are nouns.

Word	Noun	Adjective	Verb	Adverb
Haredi	Yes	No	No	No
sect	Yes	No	No	No

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

Haredi: any of several sects of Orthodox Judaism that reject modern secular culture and many of whom do not recognize the spiritual authority of the modern state of Israel
sect: a subdivision of a larger religious group

Other hypernyms of Haredi include religious order, religious sect.

Haredi (noun)	sect (noun)
any of several sects of Orthodox Judaism that reject modern secular culture and many of whom do not recognize the spiritual authority of the modern state of Israel	a dissenting clique
	a subdivision of a larger religious group