Cases of word usage

1) a length of tree-trunk that has fallen or been cut down; an official record of the journey of a ship or plane (log)

2) a thin branch broken, cut or fallen from a bush, tree etc; to push (something pointed) (into, through etc) (stick)

3) a part of a tree remaining in the ground when the trunk has fallen or has been cut; to walk with stiff, heavy movements; to be too difficult for (a person) (stump)