touch sensation vs perception

touch sensation and perception both are nouns.

Word	Noun	Adjective	Verb	Adverb
touch sensation	Yes	No	No	No
perception	Yes	No	No	No

As nouns, perception is a hypernym of touch sensation; that is, perception is a word with a broader meaning than touch sensation:

touch sensation (noun)	perception (noun)
the sensation produced by pressure receptors in the skin	becoming aware of something via the senses
	the process of perceiving
	the representation of what is perceived; basic component in the formation of a concept
	a way of conceiving something
	knowledge gained by perceiving