freightage vs rate

freightage and rate both are nouns.

Word	Noun	Adjective	Verb	Adverb
freightage	Yes	No	No	No
rate	Yes	No	Yes	No

As nouns, rate is a hypernym of freightage; that is, rate is a word with a broader meaning than freightage:

Other hypernyms of freightage include charge per unit.

freightage (noun)	rate (noun)
transporting goods commercially at rates cheaper than express rates	the relative speed of progress or change
the charge for transporting something by common carrier	amount of a charge or payment relative to some basis
	a quantity or amount or measure considered as a proportion of another quantity or amount or measure
	a magnitude or frequency relative to a time unit

freightage (verb)	rate (verb)
	assign a rank or rating to
	estimate the value of
	be worthy of or have a certain rating