visual aphasia vs alexia

visual aphasia and alexia both are nouns.

Word	Noun	Adjective	Verb	Adverb
visual aphasia	Yes	No	No	No
alexia	Yes	No	No	No

As nouns, visual aphasia and alexia are synonyms defined as:

Other synonyms of visual aphasia include word blindness.

visual aphasia (noun)	alexia (noun)
inability to perceive written words	inability to perceive written words