methodology vs epistemology

methodology and epistemology both are nouns.

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

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

methodology: the branch of philosophy that analyzes the principles and procedures of inquiry in a particular discipline
epistemology: the philosophical theory of knowledge

methodology (noun)	epistemology (noun)
the system of methods followed in a particular discipline	the philosophical theory of knowledge
the branch of philosophy that analyzes the principles and procedures of inquiry in a particular discipline