treachery vs treason

treachery and treason both are nouns.

Word	Noun	Adjective	Verb	Adverb
treachery	Yes	No	No	No
treason	Yes	No	No	No

As nouns, treachery and treason are synonyms defined as:

Other synonyms of treachery include betrayal, perfidy.

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