visor vs eyeshade

visor and eyeshade both are nouns.

Word	Noun	Adjective	Verb	Adverb
visor	Yes	No	No	No
eyeshade	Yes	No	No	No

As nouns, visor and eyeshade are synonyms defined as:

Other synonyms of visor include bill, peak, vizor.

visor (noun)	eyeshade (noun)
a brim that projects to the front to shade the eyes	a brim that projects to the front to shade the eyes
a piece of armor plate (with eye slits) fixed or hinged to a medieval helmet to protect the face