painful sensation vs pain

painful sensation and pain both are nouns.

Word	Noun	Adjective	Verb	Adverb
painful sensation	Yes	No	No	No
pain	Yes	No	Yes	No

As nouns, painful sensation and pain are synonyms defined as:

Other synonyms of painful sensation include pain sensation.

painful sensation (noun)	pain (noun)
a somatic sensation of acute discomfort	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

painful sensation (verb)	pain (verb)
	cause bodily suffering to and make sick or indisposed
	cause emotional anguish or make miserable