我的膝盖撞到桌子，起了一个很疼的包。

I have a painful ___bump on my knee from hitting the table.

他额头上的肿块开始消退了。

The ___bump on his forehead is starting to go down.

用冰块敷一下，好让那个肿包消肿。

Apply some ice to reduce the swelling of that ___bump.