wave theory of light vs undulatory theory

wave theory of light and undulatory theory both are nouns.

Word	Noun	Adjective	Verb	Adverb
wave theory of light	Yes	No	No	No
undulatory theory	Yes	No	No	No

As nouns, wave theory of light and undulatory theory are synonyms defined as:

wave theory of light and undulatory theory: (physics) the theory that light is transmitted as waves

Other synonyms of wave theory of light include wave theory.

wave theory of light (noun)	undulatory theory (noun)
(physics) the theory that light is transmitted as waves	(physics) the theory that light is transmitted as waves