colouring vs food product

colouring and food product both are nouns.

Word	Noun	Adjective	Verb	Adverb
colouring	Yes	No	No	No
food product	Yes	No	No	No

As nouns, food product is a hypernym of colouring; that is, food product is a word with a broader meaning than colouring:

Other hypernyms of colouring include foodstuff.

colouring (noun)	food product (noun)
the act or process of changing the color of something	a substance that can be used or prepared for use as food
a visual attribute of things that results from the light they emit or transmit or reflect
a digestible substance used to give color to food