pince-nez vs glasses

pince-nez and glasses both are nouns.

Word	Noun	Adjective	Verb	Adverb
pince-nez	Yes	No	No	No
glasses	Yes	No	No	No

As nouns, glasses is a hypernym of pince-nez; that is, glasses is a word with a broader meaning than pince-nez:

pince-nez: spectacles clipped to the nose by a spring
glasses: (plural) optical instrument consisting of a frame that holds a pair of lenses for correcting defective vision

Other hypernyms of pince-nez include eyeglasses, specs, spectacles.

pince-nez (noun)	glasses (noun)
spectacles clipped to the nose by a spring	(plural) optical instrument consisting of a frame that holds a pair of lenses for correcting defective vision