hydromorphone vs anodyne

hydromorphone and anodyne both are nouns.

Word	Noun	Adjective	Verb	Adverb
hydromorphone	Yes	No	No	No
anodyne	Yes	Yes	No	No

As nouns, anodyne is a hypernym of hydromorphone; that is, anodyne is a word with a broader meaning than hydromorphone:

hydromorphone: a narcotic analgesic (trade name Dilaudid) used to treat moderate to severe pain
anodyne: a medicine used to relieve pain

Other hypernyms of hydromorphone include analgesic, pain pill, painkiller.

hydromorphone (noun)	anodyne (noun)
a narcotic analgesic (trade name Dilaudid) used to treat moderate to severe pain	a medicine used to relieve pain

hydromorphone (adjective)	anodyne (adjective)
	capable of relieving pain