The following command gives a stick that's named "Stick" instead of "Stick of Untruths"

/give @a minecraft:stick{display:{Name:"Stick of Untruths"}}

Part of the command (minecraft:stick{display:{Name:"Stick of Untruths"}}) is taken directly from https://minecraft.gamepedia.com/1.13 so if this is the wrong way to give custom names to items could you please change the wikipedia article?