pain vs suffer

pain is a noun but suffer is not a noun.

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

pain (noun)	suffer (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)	suffer (verb)
cause bodily suffering to and make sick or indisposed	be in pain
cause emotional anguish or make miserable	undergo (as of injuries and illnesses)
	feel unwell or uncomfortable
	get worse in quality
	be set at a disadvantage
	put up with something or somebody unpleasant
	experience (emotional) pain
	feel physical pain
	undergo or be subjected to
	undergo or suffer
	be given to