imagery vs vision

imagery and vision both are nouns.

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

As nouns, vision is a hyponym of imagery; that is, vision is a word with a more specific, narrower meaning than imagery:

imagery (noun)	vision (noun)
the ability to form mental images of things or events	the ability to see; the visual faculty
	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