Parts of Speech for "dalam"

In Malay, some words can be grouped under two or three categories. One such word is "dalam". As an adjective it means 'deep' and as a preposition it means "in"

An example of 'dalam' being used as an adjective is:
Saya tidak berani berenang di sungai itu kerana airnya sangat dalam itu.
[I dare not swim in the river because its water is very deep.]

The following is an example in which 'dalam' is used as a preposition:
Kami terpaksa hidup dalam kemiskinan.
[We are forced to live in poverty.]

When 'dalam' is preceded by another preposition such as 'di' or 'ke', it becomes kata arah or word indicating direction. Two examples of its usage in sentences are as follows:
a) Dia menuang air ke dalam botol itu.
[He poured water into the botol.]
b) Adik masih tidur di dalam biliknya.
[My brother is still sleeping in his room.]