carob powder vs foodstuff

carob powder and foodstuff both are nouns.

Word	Noun	Adjective	Verb	Adverb
carob powder	Yes	No	No	No
foodstuff	Yes	No	No	No

As nouns, foodstuff is a hypernym of carob powder; that is, foodstuff is a word with a broader meaning than carob powder:

carob powder: powder from the ground seeds and pods of the carob tree; used as a chocolate substitute
foodstuff: a substance that can be used or prepared for use as food

Other hypernyms of carob powder include food product.

carob powder (noun)	foodstuff (noun)
powder from the ground seeds and pods of the carob tree; used as a chocolate substitute	(usually plural) consumer goods sold by a grocer
	a substance that can be used or prepared for use as food