afterimage vs memory image

afterimage and memory image both are nouns.

Word	Noun	Adjective	Verb	Adverb
afterimage	Yes	No	No	No
memory image	Yes	No	No	No

As nouns, memory image is a hypernym of afterimage; that is, memory image is a word with a broader meaning than afterimage:

afterimage: an image (usually a negative image) that persists after stimulation has ceased
memory image: a mental image of something previously experienced

afterimage (noun)	memory image (noun)
an image (usually a negative image) that persists after stimulation has ceased	a mental image of something previously experienced