The conspirators were hanged for 'high treason'.
He is guilty of 'treason'.
(..) - Say the lord's prayer. Our father... ...who art in heaven ... I can't ... Shut up. Shut up! From here on you are a prisoner charged with treason. Take him to the cage. Take him to the cage! You handle or I'll shoot him! I thought he was gonna die. - Get up. - Doc. (..)2015 The Revenant
(..) but in exchange for my service, Queen Cersei made me her Hand. What would she do for the man who rids her of her treasonous brothers? I wanted those elephants. So... how do I compare to the fat king? You're insulting (..)2019 TvShow: Game of Thrones Title: Winterfell Season: 8 Episode 1
(..) Jon. We should speak with the queen. Hyah! Torgo Nudho. You freed your brother. You committed treason. I freed my brother. And you slaughtered a city. What are you doing here? Hey, what happened? I came to kill Cersei. (..)2019 TvShow: Game of Thrones Title: The Iron Throne Season: 8 Episode 6