1. What do the following words have in common?

CHANGE
VETO
PICK
AIR
ACES

2. What do the following words have in common?

NERVES
WILL
BAND
WIRE
SIDING
RING
LINING

Answers:

1. Each word can be either preceded or followed by POCKET.

2. Each word can be preceded by the name of a type of metal:

STEEL NERVES
IRON WILL
GOLD BAND
COPPER WIRE
ALUMINUM SIDING
BRASS RING 
SILVER LINING