depreciation vs vacuous

depreciation is a noun but vacuous is not a noun.

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

depreciation (noun)	vacuous (noun)
a decrease in price or value
a communication that belittles somebody or something
decrease in value of an asset due to obsolescence or use

depreciation (adjective)	vacuous (adjective)
	devoid of matter
	devoid of intelligence or thought
	devoid of significance or force