reflux vs pathology

reflux and pathology both are nouns.

Word	Noun	Adjective	Verb	Adverb
reflux	Yes	No	No	No
pathology	Yes	No	No	No

As nouns, pathology is a hypernym of reflux; that is, pathology is a word with a broader meaning than reflux:

reflux (noun)	pathology (noun)
the outward flow of the tide	the branch of medical science that studies the causes and nature and effects of diseases
an abnormal backward flow of body fluids	any deviation from a healthy or normal condition