lese majesty vs treason

lese majesty and treason both are nouns.

Word	Noun	Adjective	Verb	Adverb
lese majesty	Yes	No	No	No
treason	Yes	No	No	No

As nouns, lese majesty and treason are synonyms defined as:

lese majesty and treason: a crime that undermines the offender's government

Other synonyms of lese majesty include high treason.

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