Using Floo powder may also involve the Evanesco spell effect.

飞路粉可能也具有消失咒的作用。

youdao

The "Evanesco" spell apparently doesn't need an object word (you don't have to say "Evaesco Potion," for example). The intent of the caster provides the needed focus on a particular object.

“消失”咒显然不需要加上消失对象名字(例如：你不需要说“魔药消失”)。施咒者只要将意念集中在一个特定的目标上即可。

youdao