Blackbeard vs Edward Teach

Blackbeard and Edward Teach both are nouns.

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

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

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

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

Blackbeard (noun)	Edward Teach (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)