That would be "cabin."
There are several trees that all start with the letter 'p' and are five letters long. The name of one tree that starts with the letter 'p' and is five letters long is the peach tree.
Estelle
Albotross
Roast
Pizza, pasta.
guillemot
Taro.
Artichoke and asparagus are vegetables.
furlough
oblong.
isogloss
Adduction, annuities, annulment, assurance