write off vs depreciate

write off and depreciate both are verbs.

Word	Noun	Adjective	Verb	Adverb
write off	No	No	Yes	No
depreciate	No	No	Yes	No

As verbs, depreciate is a hypernym of write off; that is, depreciate is a word with a broader meaning than write off:

write off (verb)	depreciate (verb)
reduce the estimated value of something	lose in value
concede the loss or worthlessness of something or somebody	lower the value of something
write something fluently, and without hesitation	belittle
cancel (a debt)