CF vs fibrosis

CF and fibrosis both are nouns.

Word	Noun	Adjective	Verb	Adverb
CF	Yes	No	No	No
fibrosis	Yes	No	No	No

As nouns, fibrosis is a hypernym of CF; that is, fibrosis is a word with a broader meaning than CF:

CF: the most common hereditary disease; the child's lungs and intestines and pancreas become clogged with thick mucus; caused by defect in a single gene; no cure is known
fibrosis: development of excess fibrous connective tissue in an organ

Other hypernyms of CF include monogenic disease, monogenic disorder.

CF (noun)	fibrosis (noun)
the most common hereditary disease; the child's lungs and intestines and pancreas become clogged with thick mucus; caused by defect in a single gene; no cure is known	development of excess fibrous connective tissue in an organ