epistemology vs philosophy

epistemology and philosophy both are nouns.

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

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

epistemology: the philosophical theory of knowledge
philosophy: the rational investigation of questions about existence and knowledge and ethics

epistemology (noun)	philosophy (noun)
the philosophical theory of knowledge	the rational investigation of questions about existence and knowledge and ethics
	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