tsarina or czarina or tzarina/zahʹreenə/ noun

• collide
• collider
• collie
• collier
• colliery
• colligative
• collimate
• collimator
• collinear
• collision
• collision course
• collocate
• collocation
• collocutor
• collodion
• collogue
• colloid
• collop
• colloq.
• colloquia
• colloquial
• colloquialism
• colloquium
• colloquy
• collotype