Edward Thatch vs Blackbeard

Edward Thatch and Blackbeard both are nouns.

Word	Noun	Adjective	Verb	Adverb
Edward Thatch	Yes	No	No	No
Blackbeard	Yes	No	No	No

As nouns, Edward Thatch and Blackbeard are synonyms defined as:

Edward Thatch and Blackbeard: an English pirate who operated in the Caribbean and off the Atlantic coast of North America (died in 1718)

Other synonyms of Edward Thatch include Edward Teach, Teach, Thatch.

Edward Thatch (noun)	Blackbeard (noun)
an English pirate who operated in the Caribbean and off the Atlantic coast of North America (died in 1718)	an English pirate who operated in the Caribbean and off the Atlantic coast of North America (died in 1718)