Windsor spectacles vs Windsor eyeglasses

Windsor spectacles and Windsor eyeglasses both are nouns.

Word	Noun	Adjective	Verb	Adverb
Windsor spectacles	Yes	No	No	No
Windsor eyeglasses	Yes	No	No	No

As nouns, Windsor spectacles and Windsor eyeglasses are synonyms defined as:

Windsor spectacles and Windsor eyeglasses: Eyeglasses with round frames, popularized by John Lennon.

Other synonyms of Windsor spectacles include John Lennon eyeglasses, Lennon Specs, Windsors.

Windsor spectacles (noun)	Windsor eyeglasses (noun)
Eyeglasses with round frames, popularized by John Lennon.	Eyeglasses with round frames, popularized by John Lennon.