fibrillation vs forking

fibrillation and forking both are nouns.

Word	Noun	Adjective	Verb	Adverb
fibrillation	Yes	No	No	No
forking	Yes	No	No	No

As nouns, forking is a hypernym of fibrillation; that is, forking is a word with a broader meaning than fibrillation:

Other hypernyms of fibrillation include branching, fork, ramification.

fibrillation (noun)	forking (noun)
act or process of forming fibrils	the act of branching out or dividing into branches
muscular twitching involving individual muscle fibers acting without coordination	the place where something divides into branches