soup vs broth

soup and broth both are nouns.

Word	Noun	Adjective	Verb	Adverb
soup	Yes	No	Yes	No
broth	Yes	No	No	No

As nouns, broth is a hyponym of soup; that is, broth is a word with a more specific, narrower meaning than soup:

soup: liquid food especially of meat or fish or vegetable stock often containing pieces of solid food
broth: a thin soup of meat or fish or vegetable stock

soup (noun)	broth (noun)
liquid food especially of meat or fish or vegetable stock often containing pieces of solid food	a thin soup of meat or fish or vegetable stock
an unfortunate situation	liquid in which meat and vegetables are simmered; used as a basis for e.g. soups or sauces
any composition having a consistency suggestive of soup

soup (verb)	broth (verb)
dope (a racehorse)