Which are the odd words out?

1) forest (it is not a type of water body like the others)
2) busy (it is not a size-related adjective like the others)
3) east (it is a direction, not an action or state like the others)
4) beautiful (it is a quality, not a measurable physical attribute like the others)
5) station (it is a place, not an adjective describing a quality like the others)