eyelid vs palpebra

eyelid and palpebra both are nouns.

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

As nouns, eyelid and palpebra are synonyms defined as:

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

Other synonyms of eyelid include lid.

eyelid (noun)	palpebra (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