depreciation vs reduction

depreciation and reduction both are nouns.

Word	Noun	Adjective	Verb	Adverb
depreciation	Yes	No	No	No
reduction	Yes	No	No	No

As nouns, reduction is a hypernym of depreciation; that is, reduction is a word with a broader meaning than depreciation:

Other hypernyms of depreciation include decrease, diminution, step-down.

depreciation (noun)	reduction (noun)
a decrease in price or value	the act of decreasing or reducing something
a communication that belittles somebody or something	the act of reducing complexity
decrease in value of an asset due to obsolescence or use	any process in which electrons are added to an atom or ion (as by removing oxygen or adding hydrogen); always occurs accompanied by oxidation of the reducing agent