Thread:Tythesly/@comment-4011511-20130221212127/@comment-409884-20130222155814

Actually, If you click on the " Building " tab in the market you will notice that it has sub-tabs

All, Animal, Storage, Crafting, Decorative and Home

So even FarmVille classifies them as a Building and as a Decoration at the same time, if it does nothing but be a decoration.