small intestine vs intestine

small intestine and intestine both are nouns.

Word	Noun	Adjective	Verb	Adverb
small intestine	Yes	No	No	No
intestine	Yes	No	No	No

As nouns, intestine is a hypernym of small intestine; that is, intestine is a word with a broader meaning than small intestine:

small intestine: the longest part of the alimentary canal; where digestion is completed
intestine: the part of the alimentary canal between the stomach and the anus

Other hypernyms of small intestine include bowel, gut.

small intestine (noun)	intestine (noun)
the longest part of the alimentary canal; where digestion is completed	the part of the alimentary canal between the stomach and the anus