depreciation vs pudding head

depreciation and pudding head both are nouns.

Word	Noun	Adjective	Verb	Adverb
depreciation	Yes	No	No	No
pudding head	Yes	No	No	No

depreciation (noun)	pudding head (noun)
a decrease in price or value	a person who is not very bright
a communication that belittles somebody or something
decrease in value of an asset due to obsolescence or use