useless trivia: What Word Means: An Error Due To Ignorance Or Inadvertance?

Questions

Bill Watterson, cartoonist for Calvin & Hobbes, is the first cartoonist to use what word in his cartoon?

Billie Jean King competed in which modern sport?

Billy the Kid was born in _____?

Black, cementlike material varying in consistency at room temperature from solid to semisolid?

Books who wrote the book "The Wives of Henry VII"?