'Treason' is Latin for 'a handing over' — from 'tradere.' Same root as 'tradition.' Giving to the enemy.
The crime of betraying one's country, especially by attempting to overthrow the government or by aiding its enemies; a betrayal of trust or confidence.
From Anglo-Norman 'treson,' from Old French 'traison' (betrayal, treachery), from Latin 'trāditiōnem' (accusative of 'trāditiō,' a handing over, a surrender, a tradition), from 'trādere' (to hand over, to deliver, to betray), from 'trāns-' (across) + 'dare' (to give). The PIE root is *deh₃- (to give). Treason is literally a 'handing over' — a giving across to the enemy
'Treason' and 'tradition' are etymological siblings — both come from Latin 'trāditiō' (a handing over), from 'trādere' (to hand across). The difference is what is being handed: a tradition is knowledge or custom handed down through generations, while treason is a handing over to the enemy.