arthroscope vs endoscope

arthroscope and endoscope both are nouns.

Word	Noun	Adjective	Verb	Adverb
arthroscope	Yes	No	No	No
endoscope	Yes	No	No	No

As nouns, endoscope is a hypernym of arthroscope; that is, endoscope is a word with a broader meaning than arthroscope:

arthroscope: a type of endoscope that is inserted into a joint for visual examination
endoscope: a long slender medical instrument for examining the interior of a bodily organ or performing minor surgery

arthroscope (noun)	endoscope (noun)
a type of endoscope that is inserted into a joint for visual examination	a long slender medical instrument for examining the interior of a bodily organ or performing minor surgery