Whig vs Englishman

Whig and Englishman both are nouns.

Word	Noun	Adjective	Verb	Adverb
Whig	Yes	No	No	No
Englishman	Yes	No	No	No

As nouns, Englishman is a hypernym of Whig; that is, Englishman is a word with a broader meaning than Whig:

Whig: a member of the political party that urged social reform in 18th and 19th century England; was the opposition party to the Tories
Englishman: a man who is a native or inhabitant of England

Other hypernyms of Whig include liberal, liberalist, progressive.

Whig (noun)	Englishman (noun)
a member of the political party that urged social reform in 18th and 19th century England; was the opposition party to the Tories	a man who is a native or inhabitant of England
a supporter of the American Revolution
a member of the Whig Party that existed in the United States before the American Civil War