unwelcome guest vs depreciation

unwelcome guest and depreciation both are nouns.

Word	Noun	Adjective	Verb	Adverb
unwelcome guest	Yes	No	No	No
depreciation	Yes	No	No	No

unwelcome guest (noun)	depreciation (noun)
someone who gets in (to a party) without an invitation or without paying	a decrease in price or value
	a communication that belittles somebody or something
	decrease in value of an asset due to obsolescence or use