monocle vs eyeglass

monocle and eyeglass both are nouns.

Word	Noun	Adjective	Verb	Adverb
monocle	Yes	No	No	No
eyeglass	Yes	No	No	No

As nouns, monocle and eyeglass are synonyms defined as:

monocle and eyeglass: lens for correcting defective vision in one eye; held in place by facial muscles

monocle (noun)	eyeglass (noun)
lens for correcting defective vision in one eye; held in place by facial muscles	lens for correcting defective vision in one eye; held in place by facial muscles