digestive tube vs alimentary tract

digestive tube and alimentary tract both are nouns.

Word	Noun	Adjective	Verb	Adverb
digestive tube	Yes	No	No	No
alimentary tract	Yes	No	No	No

As nouns, digestive tube and alimentary tract are synonyms defined as:

digestive tube and alimentary tract: tubular passage of mucous membrane and muscle extending about 8.3 meters from mouth to anus; functions in digestion and elimination

Other synonyms of digestive tube include alimentary canal, digestive tract, gastrointestinal tract, GI tract.

digestive tube (noun)	alimentary tract (noun)
tubular passage of mucous membrane and muscle extending about 8.3 meters from mouth to anus; functions in digestion and elimination	tubular passage of mucous membrane and muscle extending about 8.3 meters from mouth to anus; functions in digestion and elimination