In ecology and forestry, the distinction matters. All woods are forests, but not all forests are woods.
| Feature | Woods (Woodland) | Forest |
|---|---|---|
| Canopy Cover | Open to moderate (25–60%) | Closed (>60%, often 80–100%) |
| Tree Density | Lower; widely spaced crowns | High; crowns touching/overlapping |
| Vertical Structure | Simple: canopy + herbaceous | Complex: canopy, subcanopy, understory, shrub, herb, forest floor |
| Light Penetration | High (dappled to full sun) | Low (1–5% at floor) |
| Typical Scale | Small patches to moderate (hectares–km²) | Large, contiguous (km²–10⁶ km²) |
| Ecological Succession | Early-mid successional / maintained by fire/grazing | Late successional / climax (or managed) |
| Biodiversity | Edge species, generalists, grassland affiliates | Interior specialists, high niche partitioning |
Colloquially, "woods" = any treed area you walk in. "Forest" = big, wild, maybe scary. Scientifically, they're structural states on a continuum — and a wood can become a forest (succession) or a forest become a wood (disturbance).