This is the 770th most frequent Arabic word.
الداخل
"The inside" or "the interior."
Here, 'الداخل' is used as a noun indicating the interior or the inner part of a space.
أغلق الباب من الداخل.
Close the door from the inside.
In this sentence, 'الداخل' is a noun emphasizing the destination of the entry.
رأيت شخصًا يدخل إلى الداخل.
I saw someone entering inside.
Here, 'الداخل' functions as a noun describing the interior environment or condition.