Whole Red Chilli (also chile pepper or chilli pepper, from Nahuatl chilli) is the fruit of plants from the genus Capsicum, members of the nightshade family, Solanaceae. The term in British English and in Australia, New Zealand, India, Malaysia and other Asian countries is just chilli without pepper.

Red Chilli Powder (also powdered chili or chile powder) is the dried, pulverized fruit of one or more varieties of chili pepper, sometimes with the addition of other spices (when it may be known as chili powder blend). It is used as a spice to add piquance and flavor to dishes. In American English the name is usually spelled "chili", or, less commonly, "chile". In British English the spelling "chilli" (with two "l"s) is used consistently.

Crushed Red Chilli (also powdered chili or chile powder) is the dried, pulverized fruit of one or more varieties of chili pepper, sometimes with the addition of other spices.