Jamieson, Fausset and Brown on Job 14:10

10. man ... man--Two distinct Hebrew words are here used; Geber, a mighty man: though mighty, he dies. Adam, a man of earth: because earthly, he gives up the ghost.

wasteth--is reduced to nothing: he cannot revive in the present state, as the tree does. The cypress and pine, which when cut down do not revive, were the symbols of death among the Romans.