death vs loss

death and loss both are nouns.

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

As nouns, loss is a hyponym of death; that is, loss is a word with a more specific, narrower meaning than death:

death (noun)	loss (noun)
the act of killing	the act of losing someone or something
the event of dying or departure from life	the disadvantage that results from losing something
the permanent end of all life functions in an organism or part of an organism	military personnel lost by death or capture
the absence of life or state of being dead	the experience of losing a loved one
a final state	euphemistic expressions for death
the time when something ends	the amount by which the cost of a business exceeds its revenue
the time at which life ends; continuing until dead	something that is lost
	gradual decline in amount or activity