Eng

Envelope...

函

Armour, Contain, Correspondence, Envelope, For sword, Letter, Mail, Sheath

包

Bag, Bundle, Confident, Contain, Embrace, Envelope, Guarantee, Hug, Include, Kit, Package, Sack, Take charge of, Wrap

封

Confer, Envelope, Grant, Letter, Seal, Shut

套

Case, Coat, Convention, Cover, Covering, Envelope, Form, Formula, Harness, Jacket, Model, Noose, Pattern, Put on, Sheath, Slip, Snare, Suit, Tightly, To trick, Trap, Wear, Wrapper

信封

Envelope

封殼

Casing, Enclosing, Enclosure, Envelope, Shell