retard vs depreciation

retard and depreciation both are nouns.

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

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

retard (verb)	depreciation (verb)
lose velocity; move more slowly
cause to move more slowly or operate at a slower rate
slow the growth or development of
be delayed