cirrhosis vs liver disease

cirrhosis and liver disease both are nouns.

Word	Noun	Adjective	Verb	Adverb
cirrhosis	Yes	No	No	No
liver disease	Yes	No	No	No

As nouns, liver disease is a hypernym of cirrhosis; that is, liver disease is a word with a broader meaning than cirrhosis:

cirrhosis: a chronic disease interfering with the normal functioning of the liver; the major cause is chronic alcoholism
liver disease: a disease affecting the liver

cirrhosis (noun)	liver disease (noun)
a chronic disease interfering with the normal functioning of the liver; the major cause is chronic alcoholism	a disease affecting the liver