dihybrid cross vs crossing

dihybrid cross and crossing both are nouns.

Word	Noun	Adjective	Verb	Adverb
dihybrid cross	Yes	No	No	No
crossing	Yes	No	No	No

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

dihybrid cross: hybridization using two traits with two alleles each
crossing: (genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids

Other hypernyms of dihybrid cross include cross, crossbreeding, hybridisation, hybridization, hybridizing, interbreeding.

dihybrid cross (noun)	crossing (noun)
hybridization using two traits with two alleles each	a voyage across a body of water (usually across the Atlantic Ocean)
	traveling 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