In the English language, the term negro is a term historically used to refer to people of Black African heritage. The term negro means the color black in Spanish and Portuguese, where English took it
Prevalence of negro as a demonym has varied in American English. All-Negro Comics was a 1947 comic anthology written by African-American writers and featuring black characters.
"Negritos o Aetas" illustration in Bosquejo Geográfico e Histórico-natural del Archipielago Filipino (Ramon Jordana i Morera [ca], 1885)
Street plate in Medina of Tunis showing, in Arabic and French, Negroes street
Nigger is a racial slur directed at Black people. References to nigger have been increasingly replaced by the euphemism "the N-word", notably in cases where nigger is mentioned but not directly used.
Negro
…Kaffir (racial term) Nigger Blackfella…
Lyrics for the song "Run, Nigger, Run", about a fugitive slave escaping from a slave patrol, printed in 1851
The US edition of Joseph Conrad's The Nigger of the "Narcissus" was called The Children of the Sea.
Historical American cartoon titled "Why the nigger is not fit to vote", by Thomas Nast, arguing the reason Democrats objected to African-Americans having the vote was that, in the 1868 US presidential election, African-Americans voted for the Republican candidates Ulysses S. Grant and Schuyler Colfax. "Seymour friends meet here" in the background is a reference to the Democratic Party candidate: Horatio Seymour.
1885 illustration from Mark Twain's Adventures of Huckleberry Finn, captioned "Misto Bradish's nigger"