The following words are colloquial (Using only in some districts of Kerala) . It is better to learn original Malayalam instead of those words mentioned below.
Engane pokunnu/Kollam/Pokuva/Enthuva/Padikunna
1)'Engane pokunnu' means 'how are you doing' .Instead of that you can use the sentence " Sughamaano?"
2)'Kollam' means 'fine'.You can use the word 'Sugham'.
3)'Pokuva' means 'I am going'. You can use 'pokunnu'
' Njan officeil pokunnu'.
'Njanum office il pokunnu'.
4)'Enthuva' means 'what is' .You can use ' Entha/ Enthaanu'
Enthaanu Joli/ Joli entha?
5)Padikunna ' Studying' .You can use ' Padikkunnathu'
Entha padikkunnathu?