Related Clues:

• Hardens
• Mercury and Saturn, for instance
• See 16-Across
• Plants
• Traffic
• Common carriers
• Coagulates
• Puts (down)
• Where movies are made
• Where trunks are
• TV's
• Jam ingredients
• Fixes firmly
• Salon offerings
• 6-3, 5-7 and 6-4, e.g.