palpebra vs eyelid

palpebra and eyelid both are nouns.

Word	Noun	Adjective	Verb	Adverb
palpebra	Yes	No	No	No
eyelid	Yes	No	No	No

As nouns, palpebra and eyelid are synonyms defined as:

palpebra and eyelid: either of two folds of skin that can be moved to cover or open the eye

Other synonyms of palpebra include lid.

palpebra (noun)	eyelid (noun)
either of two folds of skin that can be moved to cover or open the eye	either of two folds of skin that can be moved to cover or open the eye