A centimeter is a measure of length. There are 100 centimeters in a meter. The abbreviation is cm. This image of a ruler is marked in cm along the top and inches (1 inch = 2.54 cm) along the bottom. Metric System of Measurement.
Some of the colours/colors include red, orange, blue, pink, and white. Color and colour are actually different spellings for the same word. Thus, there is no difference between the two. The only difference that exists between the two is due to different spelling conventions used in British English and American English. Colour is used in British English and color is used in American English.
Primary colors are main colors, like red, yellow and blue. Secondary colors are colors that can be made by mixing the primaries. So red+yellow = orange, yellow+blue= green, and red+blue=brown. Intermediate colors are all the colors in between (so darker green, pinkish colors, etc.)