chicken stock vs broth

chicken stock and broth both are nouns.

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

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

chicken stock: a stock made with chicken
broth: liquid in which meat and vegetables are simmered; used as a basis for e.g. soups or sauces

Other hypernyms of chicken stock include stock.

chicken stock (noun)	broth (noun)
a stock made with chicken	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