intraocular lens vs lens system

intraocular lens and lens system both are nouns.

Word	Noun	Adjective	Verb	Adverb
intraocular lens	Yes	No	No	No
lens system	Yes	No	No	No

As nouns, lens system is a hypernym of intraocular lens; that is, lens system is a word with a broader meaning than intraocular lens:

intraocular lens: an artificial lens that is implanted into the eye of someone to replace a damaged natural lens or someone who has had a cataract removed
lens system: a transparent optical device used to converge or diverge transmitted light and to form images

Other hypernyms of intraocular lens include lens, lense.

intraocular lens (noun)	lens system (noun)
an artificial lens that is implanted into the eye of someone to replace a damaged natural lens or someone who has had a cataract removed	a transparent optical device used to converge or diverge transmitted light and to form images