double-crossing vs treason

double-crossing and treason both are nouns.

Word	Noun	Adjective	Verb	Adverb
double-crossing	Yes	No	No	No
treason	Yes	No	No	No

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

Other hypernyms of double-crossing include betrayal, perfidy, treachery.

double-crossing (noun)	treason (noun)
an act of betrayal	a crime that undermines the offender's government
	an act of deliberate betrayal
	disloyalty by virtue of subversive behavior