rant vs screed

rant and screed both are nouns.

Word	Noun	Adjective	Verb	Adverb
rant	Yes	No	Yes	No
screed	Yes	No	No	No

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

rant (noun)	screed (noun)
pompous or pretentious talk or writing	an accurately levelled strip of material placed on a wall or floor as guide for the even application of plaster or concrete
a loud bombastic declamation expressed with strong emotion	a long piece of writing
	a long monotonous harangue

rant (verb)	screed (verb)
talk in a noisy, excited, or declamatory manner