polenta vs mush

polenta and mush both are nouns.

Word	Noun	Adjective	Verb	Adverb
polenta	Yes	No	No	No
mush	Yes	No	Yes	No

As nouns, mush is a hypernym of polenta; that is, mush is a word with a broader meaning than polenta:

Other hypernyms of polenta include cornmeal mush.

polenta (noun)	mush (noun)
a thick mush made of cornmeal boiled in stock or water	a journey by dogsled
	writing or music that is excessively sweet and sentimental
	cornmeal boiled in water
	any soft or soggy mass

polenta (verb)	mush (verb)
	travel with a dogsled
	drive (a team of dogs or a dogsled)