Cornwallis vs First Marquess Cornwallis

Cornwallis and First Marquess Cornwallis both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cornwallis	Yes	No	No	No
First Marquess Cornwallis	Yes	No	No	No

As nouns, Cornwallis and First Marquess Cornwallis are synonyms defined as:

Cornwallis and First Marquess Cornwallis: commander of the British forces in the American War of Independence; was defeated by American and French troops at Yorktown (1738-1805)

Other synonyms of Cornwallis include Charles Cornwallis.

Cornwallis (noun)	First Marquess Cornwallis (noun)
commander of the British forces in the American War of Independence; was defeated by American and French troops at Yorktown (1738-1805)	commander of the British forces in the American War of Independence; was defeated by American and French troops at Yorktown (1738-1805)