unification vs junction

unification and junction both are nouns.

Word	Noun	Adjective	Verb	Adverb
unification	Yes	No	No	No
junction	Yes	No	No	No

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

unification (noun)	junction (noun)
the act of making or becoming a single unit	an act of joining or adjoining things
an occurrence that involves the production of a union	the place where two or more things come together
the state of being joined or united or linked	something that joins or connects
	the shape or manner in which things come together and a connection is made
	the state of being joined together