leading light vs guiding light

leading light and guiding light both are nouns.

Word	Noun	Adjective	Verb	Adverb
leading light	Yes	No	No	No
guiding light	Yes	No	No	No

As nouns, leading light and guiding light are synonyms defined as:

leading light and guiding light: a celebrity who is an inspiration to others

Other synonyms of leading light include luminary, notability, notable.

leading light (noun)	guiding light (noun)
a celebrity who is an inspiration to others	a celebrity who is an inspiration to others