morphine vs analgesic

morphine and analgesic both are nouns.

Word	Noun	Adjective	Verb	Adverb
morphine	Yes	No	No	No
analgesic	Yes	Yes	No	No

As nouns, analgesic is a hypernym of morphine; that is, analgesic is a word with a broader meaning than morphine:

morphine: an alkaloid narcotic drug extracted from opium; a powerful, habit-forming narcotic used to relieve pain
analgesic: a medicine used to relieve pain

Other hypernyms of morphine include anodyne, pain pill, painkiller, opiate.

morphine (noun)	analgesic (noun)
an alkaloid narcotic drug extracted from opium; a powerful, habit-forming narcotic used to relieve pain	a medicine used to relieve pain

morphine (adjective)	analgesic (adjective)
	capable of relieving pain