pacifism vs philosophy

pacifism and philosophy both are nouns.

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

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

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

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

pacifism (noun)	philosophy (noun)
the doctrine that all violence is unjustifiable	the rational investigation of questions about existence and knowledge and ethics
the belief that all international disputes can be settled by arbitration	a belief (or system of beliefs) accepted as authoritative by some group or school
	any personal belief about how to live or how to deal with a situation