beacon vs lighthouse

beacon and lighthouse both are nouns.

Word	Noun	Adjective	Verb	Adverb
beacon	Yes	No	Yes	No
lighthouse	Yes	No	No	No

As nouns, beacon and lighthouse are synonyms defined as:

beacon and lighthouse: a tower with a light that gives warning of shoals to passing ships

Other synonyms of beacon include beacon light, pharos.

beacon (noun)	lighthouse (noun)
a radio station that broadcasts a directional signal for navigational purposes	a tower with a light that gives warning of shoals to passing ships
a tower with a light that gives warning of shoals to passing ships
a fire (usually on a hill or tower) that can be seen from a distance

beacon (verb)	lighthouse (verb)
guide with a beacon
shine like a beacon