tonnage

As a noun tonnage

is tonnage.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between volume and tonnage

is that volume is a unit of three-dimensional measure of space that comprises a length, a width and a height. It is measured in units of cubic centimeters in metric, cubic inches or cubic feet in English measurement while tonnage is the number of tons of water that a floating ship displaces.

As nouns the difference between tonnage and tannage

is that tonnage is the number of tons of water that a floating ship displaces while tannage is the act, operation, or result of tanning; a tanning.

As nouns the difference between tunnage and tonnage

is that tunnage is alternative form of lang=en while tonnage is the number of tons of water that a floating ship displaces.

Tonnage is a coordinate term of boatage.

As nouns the difference between tonnage and boatage

is that tonnage is tonnage while boatage is the total capacity of boats, as of lifeboats on a ship.

As nouns the difference between tonnage and weighlock

is that tonnage is tonnage while weighlock is a lock, as on a canal, in which boats are weighed and their tonnage is settled.

Dwt is likely misspelled.

Dwt has no English definition.

As a noun tonnage

is the number of tons of water that a floating ship displaces.