1. Concave on both sides
   - concavo-concave

See also: concave

• Cornaceae
• cornball
• cornbread
• corncob
• corncrake
• corncrib
• cornea
• corneal
• corneal graft
• corneal transplant
• corned
• corned beef
• corned beef hash
• Corneille
• cornel
• Cornelia Otis Skinner
• cornelian
• cornelian cherry
• Cornelis Jansen
• Cornelius Jansenius
• Cornelius Vanderbilt
• Cornell
• Cornell University
• corneous
• corner