What's the difference between dockage and lockage?
Dockage
Definition:
(n.) A charge for the use of a dock.
Example Sentences:
(1) Dockage level varied among bulks of the same type of grain, but the mean dockage in any one crop was always larger when originating from the USA than from other countries.
Lockage
Definition:
(n.) Materials for locks in a canal, or the works forming a lock or locks.
(n.) Toll paid for passing the locks of a canal.
(n.) Amount of elevation and descent made by the locks of a canal.