pain vs discomfit

pain is a noun but discomfit is not a noun.

Word	Noun	Adjective	Verb	Adverb
pain	Yes	No	Yes	No
discomfit	No	No	Yes	No

As verbs, discomfit is a hypernym of pain; that is, discomfit is a word with a broader meaning than pain:

Other hypernyms of pain include discompose, disconcert, untune, upset.

pain (noun)	discomfit (noun)
a somatic sensation of acute discomfort
something or someone that causes trouble; a source of unhappiness
emotional distress; a fundamental feeling that people try to avoid
a symptom of some physical hurt or disorder

pain (verb)	discomfit (verb)
cause bodily suffering to and make sick or indisposed	cause to lose one's composure
cause emotional anguish or make miserable