What are these two common structures that use a set of 6 letters?

Find the two words. These words refer to 2 common structures you might find on a property.

• Structure 1 uses 4 out of the 6 letters, using each of those 4
  letters distinctly once.
• Structure 2 also uses 4 out of the 6 letters, but repeats
  half of those letters exactly once.
• The set of six letters also spell a word for either: a sausage, a lit party.