lid vs eyelid

lid and eyelid both are nouns.

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

As nouns, lid and eyelid are synonyms defined as:

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

Other synonyms of lid include palpebra.

lid (noun)	eyelid (noun)
a movable top or cover (hinged or separate) for closing the opening at the top of a box, chest, jar, pan, etc.	either of two folds of skin that can be moved to cover or open the eye
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