treason vs betrayal

treason and betrayal both are nouns.

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

As nouns, treason and betrayal are synonyms defined as:

Other synonyms of treason include perfidy, treachery.

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

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