epicarp vs hull

epicarp

• Exocarp. 

hull

• Any covering. 

• The outer covering of a fruit or seed. 

• The body or frame of a vessel, such as a ship or plane. 

• The smallest set that possesses a particular property (such as convexity) and contains every point of A; slightly more formally, the intersection of all sets which possess the specified property and of which A is a subset. 

• To hit (a ship) in the hull with cannon fire etc. 

• To remove the outer covering of a fruit or seed.