haul vs towage

haul and towage both are nouns.

Word	Noun	Adjective	Verb	Adverb
haul	Yes	No	Yes	No
towage	Yes	No	No	No

As nouns, towage is a hyponym of haul; that is, towage is a word with a more specific, narrower meaning than haul:

haul: the act of drawing or hauling something
towage: the act of hauling something (as a vehicle) by means of a hitch or rope

Other hyponyms of haul include tow.

haul (noun)	towage (noun)
the act of drawing or hauling something	the act of hauling something (as a vehicle) by means of a hitch or rope
the quantity that was caught

haul (verb)	towage (verb)
transport in a vehicle
draw slowly or heavily