pacifism vs ism

pacifism and ism both are nouns.

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

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

pacifism: the doctrine that all violence is unjustifiable
ism: a belief (or system of beliefs) accepted as authoritative by some group or school

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

pacifism (noun)	ism (noun)
the doctrine that all violence is unjustifiable	a belief (or system of beliefs) accepted as authoritative by some group or school
the belief that all international disputes can be settled by arbitration