depreciation vs tough

depreciation and tough both are nouns.

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

depreciation (noun)	tough (noun)
a decrease in price or value	an aggressive and violent young criminal
a communication that belittles somebody or something	a cruel and brutal fellow
decrease in value of an asset due to obsolescence or use	someone who learned to fight in the streets rather than being formally trained in the sport of boxing

depreciation (adjective)	tough (adjective)
	resistant to cutting or chewing
	physically toughened
	not given to gentleness or sentimentality
	unfortunate or hard to bear
	substantially made or constructed
	feeling physical discomfort or pain (`tough' is occasionally used colloquially for `bad')
	violent and lawless
	very difficult; severely testing stamina or resolution
	making great mental demands; hard to comprehend or solve or believe