crossing vs junction

crossing and junction both are nouns.

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

As nouns, junction is a hypernym of crossing; that is, junction is a word with a broader meaning than crossing:

crossing (noun)	junction (noun)
a voyage across a body of water (usually across the Atlantic Ocean)	an act of joining or adjoining things
traveling across	the place where two or more things come together
(genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids	something that joins or connects
a path (often marked) where something (as a street or railroad) can be crossed to get from one side to the other	the shape or manner in which things come together and a connection is made
a junction where one street or road crosses another	the state of being joined together
a point where two lines (paths or arcs etc.) intersect
a shallow area in a stream that can be forded