Pitt vs Second Earl of Chatham

Pitt and Second Earl of Chatham both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pitt	Yes	No	No	No
Second Earl of Chatham	Yes	No	No	No

As nouns, Pitt and Second Earl of Chatham are synonyms defined as:

Pitt and Second Earl of Chatham: English statesman and son of Pitt the Elder (1759-1806)

Other synonyms of Pitt include Pitt the Younger, William Pitt, William Pitt the Younger.

Pitt (noun)	Second Earl of Chatham (noun)
English statesman who brought the Seven Years' War to an end (1708-1778)	English statesman and son of Pitt the Elder (1759-1806)
English statesman and son of Pitt the Elder (1759-1806)
a British playwright who created the fictional character Sweeney Todd (1799-1855)