sectarianism vs narrowness

sectarianism and narrowness both are nouns.

Word	Noun	Adjective	Verb	Adverb
sectarianism	Yes	No	No	No
narrowness	Yes	No	No	No

As nouns, narrowness is a hypernym of sectarianism; that is, narrowness is a word with a broader meaning than sectarianism:

sectarianism: a narrow-minded adherence to a particular sect or party or denomination
narrowness: an inclination to criticize opposing opinions or shocking behavior

Other hypernyms of sectarianism include narrow-mindedness.

sectarianism (noun)	narrowness (noun)
a narrow-minded adherence to a particular sect or party or denomination	the property of being narrow; having little width
	a small margin
	an inclination to criticize opposing opinions or shocking behavior
	a restriction of range or scope