forking vs trifurcation

forking and trifurcation both are nouns.

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

As nouns, trifurcation is a hyponym of forking; that is, trifurcation is a word with a more specific, narrower meaning than forking:

Other hyponyms of forking include bifurcation, divarication, fibrillation.

forking (noun)	trifurcation (noun)
the act of branching out or dividing into branches	the act of splitting into three branches
the place where something divides into branches