palpebra vs lid

palpebra and lid both are nouns.

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

As nouns, palpebra and lid are synonyms defined as:

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

Other synonyms of palpebra include eyelid.

palpebra (noun)	lid (noun)
either of two folds of skin that can be moved to cover or open the eye	a movable top or cover (hinged or separate) for closing the opening at the top of a box, chest, jar, pan, etc.
	headdress that protects the head from bad weather; has shaped crown and usually a brim
	either of two folds of skin that can be moved to cover or open the eye