As a noun treason
is the crime of betraying one’s own country.
As an adjective treasonous is
like or in the way of treason.
Other Comparisons: What's the difference?
The crime of betraying one’s own country.
* 1952 , James Avery Joyce: Justice At Work : (this edition Pan 1957) Page 105.
Providing aid and comfort to the enemy.
- Formerly, the punishment for high treason was of a most barbarous character…. Women were burnt. A male traitor was dragged or drawn to the place of execution and hanged; but while still alive, he was cut down and disembowelled. His head was then severed from his body which was quartered. The head and quarters, which were at the Kings disposal, were usually exposed in some conspicuous place—the Temple Bar being a favourite spot—after being boiled in salt to prevent putrification and in cumin seed to prevent birds feasting on them.
Like or in the way of treason.
:His treasonous actions earned Benedict Arnold eternal scorn.