Originally Posted by Millerp
If you can see diagonal parallel ribs in the cotton fabric (twill) it is most probably chino cloth.
In common usage most people call just about any cotton pants "chinos "or "khakis" although
khaki really refers to a color.
Actually, khaki simultaneously refers to the specific garment and the color. The garments were named for the Persian word for dirt, simultaneously introducing the word as a color and a garment. Thank the rank and file soldiery of the British army c.1846 for that confusing bit of the english language.
It is not at all incorrect to talk about olive or gray khakis, and it is also perfectly accurate to talk about khaki chinos.