homicide vs shooting

homicide and shooting both are nouns.

Word	Noun	Adjective	Verb	Adverb
homicide	Yes	No	No	No
shooting	Yes	No	No	No

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

Other hyponyms of homicide include honor killing, manslaughter, execution, murder, slaying.

homicide (noun)	shooting (noun)
the killing of a human being by another human being	the act of firing a projectile
	killing someone by gunfire