discomfort vs hangover

discomfort and hangover both are nouns.

Word	Noun	Adjective	Verb	Adverb
discomfort	Yes	No	No	No
hangover	Yes	No	No	No

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

discomfort: the state of being tense and feeling pain
hangover: disagreeable aftereffects from the use of drugs (especially alcohol)

Other hyponyms of discomfort include incommodiousness, inconvenience, malaise, unease, uneasiness, katzenjammer, wretchedness.

discomfort (noun)	hangover (noun)
an uncomfortable feeling of mental painfulness or distress	something that has survived from the past
the state of being tense and feeling pain	an official who remains in office after his term
	disagreeable aftereffects from the use of drugs (especially alcohol)