stock cube vs broth

stock cube and broth both are nouns.

Word	Noun	Adjective	Verb	Adverb
stock cube	Yes	No	No	No
broth	Yes	No	No	No

As nouns, broth is a hypernym of stock cube; that is, broth is a word with a broader meaning than stock cube:

stock cube: a cube of dehydrated stock
broth: liquid in which meat and vegetables are simmered; used as a basis for e.g. soups or sauces

Other hypernyms of stock cube include stock.

stock cube (noun)	broth (noun)
a cube of dehydrated stock	a thin soup of meat or fish or vegetable stock
	liquid in which meat and vegetables are simmered; used as a basis for e.g. soups or sauces