Thinking about it more, trying to recall conversations with my father and actually reading the story I linked above, I feel that the difference between drovosek

Thinking about it more, trying to recall conversations with my father and actually reading the story I linked above, I feel that the difference between drovosek and drovorub is that drovosek's job is in the beginning of the process of turning trees into firewood, and drovorub is in the end. So drovosek turns trees into the firewood, and drovorub makes firewood into a proper size.