Luschka's tonsil vs third tonsil

Luschka's tonsil and third tonsil both are nouns.

Word	Noun	Adjective	Verb	Adverb
Luschka's tonsil	Yes	No	No	No
third tonsil	Yes	No	No	No

As nouns, Luschka's tonsil and third tonsil are synonyms defined as:

Luschka's tonsil and third tonsil: a collection of lymphatic tissue in the throat behind the uvula (on the posterior wall and roof of the nasopharynx)

Other synonyms of Luschka's tonsil include adenoid, pharyngeal tonsil, tonsilla adenoidea, tonsilla pharyngealis.

Luschka's tonsil (noun)	third tonsil (noun)
a collection of lymphatic tissue in the throat behind the uvula (on the posterior wall and roof of the nasopharynx)	a collection of lymphatic tissue in the throat behind the uvula (on the posterior wall and roof of the nasopharynx)