eyeglass wearer vs beholder

eyeglass wearer and beholder both are nouns.

Word	Noun	Adjective	Verb	Adverb
eyeglass wearer	Yes	No	No	No
beholder	Yes	No	No	No

As nouns, beholder is a hypernym of eyeglass wearer; that is, beholder is a word with a broader meaning than eyeglass wearer:

eyeglass wearer: a person who wears spectacles in order to see better
beholder: a person who becomes aware (of things or events) through the senses

Other hypernyms of eyeglass wearer include observer, perceiver, percipient.

eyeglass wearer (noun)	beholder (noun)
a person who wears spectacles in order to see better	a person who becomes aware (of things or events) through the senses