vision vs sense datum

vision and sense datum both are nouns.

Word	Noun	Adjective	Verb	Adverb
vision	Yes	No	No	No
sense datum	Yes	No	No	No

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

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

vision (noun)	sense datum (noun)
the ability to see; the visual faculty	an unelaborated elementary awareness of stimulation
the perceptual experience of seeing
a vivid mental image
the formation of a mental image of something that is not perceived as real and is not present to the senses
a religious or mystical experience of a supernatural appearance