crossing vs traversal

crossing and traversal both are nouns.

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

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

Other hyponyms of crossing include ford, fording, traverse.

crossing (noun)	traversal (noun)
a voyage across a body of water (usually across the Atlantic Ocean)	taking a zigzag path on skis
traveling across	travel across
(genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids
a path (often marked) where something (as a street or railroad) can be crossed to get from one side to the other
a junction where one street or road crosses another
a point where two lines (paths or arcs etc.) intersect
a shallow area in a stream that can be forded