useless trivia: What Word Means: Relating To A Seta?

Questions

In Goethes Faust, the evil spirit to whom Faust sells his soul?

A smooth nut in a rough cuplike base, the fruit of the oak tree?

A small working boat rigged with a four sided sail, bent and hoisted on a yard?

Food for horses or cattle particularly straw or hay?

A pseudonym of Rene Raymond, novelist known for No orchids for Miss Blandish?