Windsor eyeglasses vs Windsor spectacles

Windsor eyeglasses and Windsor spectacles both are nouns.

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

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

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

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

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