imaging vs evocation

imaging and evocation both are nouns.

Word	Noun	Adjective	Verb	Adverb
imaging	Yes	No	No	No
evocation	Yes	No	No	No

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

imaging (noun)	evocation (noun)
(medicine) obtaining pictures of the interior of the body	imaginative re-creation
the ability to form mental images of things or events	stimulation that calls up (draws forth) a particular class of behaviors
	calling up supposed supernatural forces by spells and incantations