utilitarianism vs ism

utilitarianism and ism both are nouns.

Word	Noun	Adjective	Verb	Adverb
utilitarianism	Yes	No	No	No
ism	Yes	No	No	No

As nouns, ism is a hypernym of utilitarianism; that is, ism is a word with a broader meaning than utilitarianism:

utilitarianism: doctrine that the useful is the good; especially as elaborated by Jeremy Bentham and James Mill; the aim was said to be the greatest happiness for the greatest number
ism: a belief (or system of beliefs) accepted as authoritative by some group or school

Other hypernyms of utilitarianism include doctrine, philosophical system, philosophy, school of thought.

utilitarianism (noun)	ism (noun)
doctrine that the useful is the good; especially as elaborated by Jeremy Bentham and James Mill; the aim was said to be the greatest happiness for the greatest number	a belief (or system of beliefs) accepted as authoritative by some group or school