Chestnut and Infrared

Chestnut noun - An idea or expression that has been used by many people.

Infrared and chestnut are semantically related in color of blood topic. In some cases you can use "Infrared" instead a noun "Chestnut".

Infrared noun - Electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves.

Chestnut and infrared are semantically related in color of blood topic. Sometimes you can use "Chestnut" instead a noun "Infrared".