CLOUD
cloud
club
club car
club winder
coach
coach yard
coal car
coaling tower
coal track
coast to coast tender
cock loft
coffee grinder
COFFIN
cog locomotive
cog railway
cogwheel locomotive
coke
COLON
COLON EQUALS
colonist car
colonization
colonize
colonizer
COLON SIGN
color
color blindness
color-blind person
color circle
colored
colorer
colorfast
color fastness
colorful
colorfulness
color green
colorimetry
coloring
colorless
colorlessness
color model
color photo
color red
colors
color sample
color wheel
color yellow
colourless
combination caboose
combination depot
American English