otitis interna vs labyrinthitis

otitis interna and labyrinthitis both are nouns.

Word	Noun	Adjective	Verb	Adverb
otitis interna	Yes	No	No	No
labyrinthitis	Yes	No	No	No

As nouns, otitis interna and labyrinthitis are synonyms defined as:

otitis interna and labyrinthitis: inflammation of the inner ear; can cause vertigo and vomiting

otitis interna (noun)	labyrinthitis (noun)
inflammation of the inner ear; can cause vertigo and vomiting	inflammation of the inner ear; can cause vertigo and vomiting