This is the 86th most frequent Arabic word.
داخل
"Inside" or "within."
Here 'داخل' is used as a preposition to indicate being physically inside a specific location.
أنا داخل المنزل.
I am inside the house.
In this sentence, 'داخل' functions as a preposition indicating the placement of an object into an enclosed space.
وضع الكتاب داخل الحقيبة.
He placed the book inside the bag.
Here 'داخل' is part of an expression to convey the idea of an internal, non-physical concept within oneself.