fast food vs victuals

fast food and victuals both are nouns.

Word	Noun	Adjective	Verb	Adverb
fast food	Yes	No	No	No
victuals	Yes	No	No	No

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

fast food: inexpensive food (hamburgers or chicken or milkshakes) prepared and served quickly
victuals: a source of materials to nourish the body

Other hypernyms of fast food include aliment, alimentation, nourishment, nutriment, nutrition, sustenance.

fast food (noun)	victuals (noun)
inexpensive food (hamburgers or chicken or milkshakes) prepared and served quickly	any substance that can be used as food
	a source of materials to nourish the body
	a stock or supply of foods