manic disorder vs depreciation

manic disorder and depreciation both are nouns.

Word	Noun	Adjective	Verb	Adverb
manic disorder	Yes	No	No	No
depreciation	Yes	No	No	No

manic disorder (noun)	depreciation (noun)
a mood disorder; an affective disorder in which the victim tends to respond excessively and sometimes violently	a decrease in price or value
	a communication that belittles somebody or something
	decrease in value of an asset due to obsolescence or use