scalage vs estimation

scalage and estimation both are nouns.

Word	Noun	Adjective	Verb	Adverb
scalage	Yes	No	No	No
estimation	Yes	No	No	No

As nouns, estimation is a hypernym of scalage; that is, estimation is a word with a broader meaning than scalage:

Other hypernyms of scalage include approximation, estimate, idea.

scalage (noun)	estimation (noun)
the act of scaling in weight or quantity or dimension	a judgment of the qualities of something or somebody
estimation of the amount of lumber in a log	an approximate calculation of quantity or degree or worth
	the respect with which a person is held
	a document appraising the value of something (as for insurance or taxation)