collyrium vs eye-lotion

collyrium and eye-lotion both are nouns.

Word	Noun	Adjective	Verb	Adverb
collyrium	Yes	No	No	No
eye-lotion	Yes	No	No	No

As nouns, collyrium and eye-lotion are synonyms defined as:

collyrium and eye-lotion: lotion consisting of a solution used as a cleanser for the eyes

Other synonyms of collyrium include eyewash.

collyrium (noun)	eye-lotion (noun)
lotion consisting of a solution used as a cleanser for the eyes	lotion consisting of a solution used as a cleanser for the eyes