Ecclesiastes 10:9

Removeth. The Hebrew verb in the form here used means “to quarry,” or “to hew out,” that is, to lift a hewn stone out of its place in the wall of the quarry. Considerable danger was involved in such work carried on by primitive methods. In 1 Kings 5:17 the words “they brought” are from the same verb. On the basis of Deut. 19:14 some commentators refer this expression to the removal of boundary stones.

Cleaveth wood. See Deut. 19:5. Here is a parallel to the preceding statement about one who quarries stone. Presumably Solomon is not speaking of cutting firewood, which is not particularly dangerous, but of felling trees.