sunglasses vs eyeglasses

sunglasses and eyeglasses both are nouns.

Word	Noun	Adjective	Verb	Adverb
sunglasses	Yes	No	No	No
eyeglasses	Yes	No	No	No

As nouns, eyeglasses is a hypernym of sunglasses; that is, eyeglasses is a word with a broader meaning than sunglasses:

sunglasses: (plural) spectacles that are darkened or polarized to protect the eyes from the glare of the sun
eyeglasses: (plural) optical instrument consisting of a frame that holds a pair of lenses for correcting defective vision

Other hypernyms of sunglasses include glasses, specs, spectacles.

sunglasses (noun)	eyeglasses (noun)
(plural) spectacles that are darkened or polarized to protect the eyes from the glare of the sun	(plural) optical instrument consisting of a frame that holds a pair of lenses for correcting defective vision