impulse vs Thanatos

impulse and Thanatos both are nouns.

Word	Noun	Adjective	Verb	Adverb
impulse	Yes	No	No	No
Thanatos	Yes	No	No	No

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

Other hyponyms of impulse include abience, adience, death instinct, death wish, itchy feet, wanderlust.

impulse (noun)	Thanatos (noun)
the act of applying force suddenly	(psychoanalysis) an unconscious urge to die
an impelling force or strength	(Greek mythology) the Greek personification of death; son of Nyx
the electrical discharge that travels along a nerve fiber
(electronics) a sharp transient wave in the normal electrical state (or a series of such transients)
a sudden desire
an instinctive motive