Progress.
Conditions for advancing in any way.
The horizontal distance between the front of one step in a flight of stairs and the front of the next.
The whereabouts (of something).
The suitability of ground for riding, walking etc.
Course of life; behaviour; doings; ways.
A departure.
Attending or visiting (a stated event, place, etc.) habitually or regularly.
Likely to continue; viable.
Current, prevailing.
Available.
A shift or change; a shifting movement.
The phenomenon by which two or more constituents appearing on the same side of their common head exchange positions to obtain non-canonical order.