Digestive tract and Epithelial duct

Digestive tract noun - Tubular passage of mucous membrane and muscle extending about 8.3 meters from mouth to anus; functions in digestion and elimination.

Epithelial duct and digestive tract are semantically related. In some cases you can use "Epithelial duct" instead a noun phrase "Digestive tract".

Epithelial duct noun - A bodily passage or tube lined with epithelial cells and conveying a secretion or other substance.

Digestive tract and epithelial duct are semantically related. Sometimes you can replace phrase "Digestive tract" with "Epithelial duct", this phrases are similar.