evocation vs mental imagery

evocation and mental imagery both are nouns.

Word	Noun	Adjective	Verb	Adverb
evocation	Yes	No	No	No
mental imagery	Yes	No	No	No

As nouns, mental imagery is a hypernym of evocation; that is, mental imagery is a word with a broader meaning than evocation:

Other hypernyms of evocation include imagery, imagination, imaging.

evocation (noun)	mental imagery (noun)
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