loss vs decease

loss and decease both are nouns.

Word	Noun	Adjective	Verb	Adverb
loss	Yes	No	No	No
decease	Yes	No	Yes	No

As nouns, decease is a hypernym of loss; that is, decease is a word with a broader meaning than loss:

Other hypernyms of loss include death, expiry.

loss (noun)	decease (noun)
the act of losing someone or something	the event of dying or departure from life
the disadvantage that results from losing something
military personnel lost by death or capture
the experience of losing a loved one
euphemistic expressions for death
the amount by which the cost of a business exceeds its revenue
something that is lost
gradual decline in amount or activity

loss (verb)	decease (verb)
	pass from physical life and lose all bodily attributes and functions necessary to sustain life