A detour is a path taken that goes out of the way of your usual path. Detours are usually set up when there is some obstacle and there needs to be a way around it.
Used as a verb, it simply means you are taking a detour, for example "I am going to detour past the shops on my way home".
Furniture is the name collectively used for items like tables, chairs, beds etc that you find inside your house. Furniture is generally something that you use, but some pieces of furniture are there only for decoration.
Immature means not fully developed or not ready yet. It can describe a person, an animal, or a plant that is still growing.
The word is often used for babies and young animals, and for plants that have not reached full size. Sometimes it also describes behavior that is not thoughtful or responsible yet.
The photo is of an immature owl.
Something is obscure if it is unclear or uncertain. Something obscured cannot easily be seen or understood.
The lamp post in the picture is obscured from view.
