Just to prove, that people will argue about anything: This is a stick.
(piefedimages.s3.eu-central-003.backblazeb2.com)
Actually, by virtue of it not being attached to the tree anymore after it has fallen, it no longer is a twig even if it hasn’t fully dried up yet. So until it has fully dried, it’s in a state where it’s both twig and stick. A twick if you will.