- cognitive-behavioral therapy
- cognitive dissonance
- cognitive science
- cognitive therapy
- cognizable
- cognizance
- cognizances
- cognizant
- cognomen
- cognomens
- cognomina
- cognoscente
- cognoscenti
- cogon
- cogongrass
- cogons
- cog railroad
- cog railway
- cogs
- Cogswell chair
- Cogswell College
- Cogswell College
- Cogswell College North
- cogwheel
- cohabit