visual agnosia vs agnosia

visual agnosia and agnosia both are nouns.

Word	Noun	Adjective	Verb	Adverb
visual agnosia	Yes	No	No	No
agnosia	Yes	No	No	No

As nouns, agnosia is a hypernym of visual agnosia; that is, agnosia is a word with a broader meaning than visual agnosia:

visual agnosia: inability to recognize or interpret objects in the visual field
agnosia: inability to recognize objects by use of the senses

visual agnosia (noun)	agnosia (noun)
inability to recognize or interpret objects in the visual field	inability to recognize objects by use of the senses