clob - colored sweep
- coastal indentations
- coastal lake
- coastal onlap
- coastal plain
- coastal protection
- coastal region
- coastal toplap
- coastal water
- coasting
- coastland
- coastline
- coat
- coating
- coating of mucus
- coaxial fractures
- coazervate
- cob
- coba
- cobalamin
- cobalt
- cobalt arsenic sulfide
- cobalt bloom
- cobalt chloride
- cobalt glance
- cobalt minerals
- cobalt nitrate
- cobalt ore
- cobalt pentlandite
- cobalt pyrite
- cobalt spar
- cobalt-chalcanthite
- cobalt-melanterite
- cobalt-ocher
- cobalt-oligospar
- cobaltchrompicotite
- cobaltite
- cobaltnickelpyrite
- cobaltoadamite
- cobaltocalcite
- cobaltochrompicotite