fibrillation vs ramification

fibrillation and ramification both are nouns.

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

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

Other hypernyms of fibrillation include branching, fork, forking.

fibrillation (noun)	ramification (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	an arrangement of branching parts
	a development that complicates a situation
	a part of a forked or branching shape