well-lighted vs illuminated

well-lighted and illuminated both are adjectives.

Word	Noun	Adjective	Verb	Adverb
well-lighted	No	Yes	No	No
illuminated	No	Yes	No	No

As adjectives, well-lighted and illuminated are synonyms defined as:

Other synonyms of well-lighted include lighted, lit.

well-lighted (adjective)	illuminated (adjective)
provided with artificial light	provided with artificial light