labyrinthitis vs otitis interna

labyrinthitis and otitis interna both are nouns.

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

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

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

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