sigmoidoscope vs endoscope

sigmoidoscope and endoscope both are nouns.

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

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

sigmoidoscope: an endoscope (a flexible fiberoptic probe) for examining the sigmoid colon
endoscope: a long slender medical instrument for examining the interior of a bodily organ or performing minor surgery

sigmoidoscope (noun)	endoscope (noun)
an endoscope (a flexible fiberoptic probe) for examining the sigmoid colon	a long slender medical instrument for examining the interior of a bodily organ or performing minor surgery