An adverb is much like an adjective it's actually the words adjective adverb smooshed together so think of it as a word that is describing the verb
The speaker of this quote is Assef. He has become a Taliban official, and in these lines, he explains what he believes is the work of the Taliban. He argues that, by working with the Taliban, he feels "liberated." He also tells us that he believes his actions (murder, destruction, etc.) are the work of God. These statements are ironic because we do not normally associate the work of God with suffering and destruction. The statement is meat to demonstrate how the Taliban has twisted the ideas of Islam to its benefit.
The word "hearth" is a noun.
In the selection procedure, the standard deviation of 1.20 showed that the average age of fifty undergraduates, males, and females numbered equally, was 21.
Hopefully, this will do. Good luck!