Rainbows have many colors.

Meaning: This means that rainbows are made up of a large number of different colors. It's like saying, Rainbows are made up of many different colors, including red, orange, yellow, green, blue, indigo, and violet.

Choice of Words: Rainbows are beautiful and colorful arcs of light that appear in the sky after rain. Have is a verb that means to possess or own something. Many means a large number of something.

Alternative Expressions

Related Expressions