counterpart /kownˈtər-pärt/

1. The part that answers to, fits into or completes another part, having the qualities which the other lacks
2. A corresponding or equivalent person or thing
3. A duplicate, a close or exact copy

• sillocks
• sills
• silly
• silly-billies
• silly-billy
• silly-how
• silly-hows
• silly money
• silly season
• silly seasons
• Silly String®
• silo
• silo'd
• siloed
• siloing
• silos
• siloxane
• siloxanes
• silphia
• silphium
• silphiums
• silt
• siltation
• siltations
• silted