death wish vs death instinct

death wish and death instinct both are nouns.

Word	Noun	Adjective	Verb	Adverb
death wish	Yes	No	No	No
death instinct	Yes	No	No	No

As nouns, death wish and death instinct are synonyms defined as:

death wish and death instinct: (psychoanalysis) an unconscious urge to die

Other synonyms of death wish include Thanatos.

death wish (noun)	death instinct (noun)
(psychoanalysis) an unconscious urge to die	(psychoanalysis) an unconscious urge to die