estimate vs scalage

estimate and scalage both are nouns.

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

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

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

estimate (verb)	scalage (verb)
judge tentatively or form an estimate of (quantities or time)
judge to be probable