morphia vs analgesic

morphia and analgesic both are nouns.

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

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

morphia: 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 morphia include anodyne, pain pill, painkiller, opiate.

morphia (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

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