vision vs sensation

vision and sensation both are nouns.

Word	Noun	Adjective	Verb	Adverb
vision	Yes	No	No	No
sensation	Yes	No	No	No

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

Other hypernyms of vision include aesthesis, esthesis, sense datum, sense experience, sense impression.

vision (noun)	sensation (noun)
the ability to see; the visual faculty	an unelaborated elementary awareness of stimulation
the perceptual experience of seeing	the faculty through which the external world is apprehended
a vivid mental image	a general feeling of excitement and heightened interest
the formation of a mental image of something that is not perceived as real and is not present to the senses	someone who is dazzlingly skilled in any field
a religious or mystical experience of a supernatural appearance	a state of widespread public excitement and interest