When do I use "ada" and "adalah"? Are there other forms of am/are? When are they used?
This one I'm not sure sorry
"ada" is "there is/there exists" "Adalah" is "the state of being", like "I am rich"
What is the difference between "dia" and "ia" ? Thank you.
"dia" is unformal. "ia" is more formal and it usually used to older person (parents, teacher, etc).
I don't think there is a difference
The only difference is formal and informal, other no difference