Choose the correct alternative for the given relation.
Coconut : Shell : : Letter : ?
Letter-box
Stamp
Envelope
Choose the correct alternative for the given relation.
Taxonomy : Classification : : Pedology : ?
Choose the correct alternative for the given relation.
Calendar : Dates : : Dictionary : ?
Choose the correct alternative for the given relation.
Carpenter : Furniture
Choose the correct alternative for the given relation.
Buoy : Channel
Choose the correct alternative for the given relation.
Necromancy : Ghosts