Does Workers’ Compensation cover pain and suffering caused by a work related injury?

There is no payment for pain and suffering. Only your lost wages and medical bills are covered. 

What is "AWW" for Pennsylvania Workers' Compensation Cases?

AWW means "average weekly wage".  Pennsylvania publishes a list of their average weekly wage.  As your Montgomery County Worker's Compensation Lawyer should inform you, under the Workers' Compensation Act, injured workers are entitled to indemnity (wage-loss) benefits equal to two-thirds of their weekly wage for a work-related injury. Be aware, however, there are minimum and maximum adjustments provided in the Act, and the benefit rate is set using the annual maximum in place at the time of injury.

Confusing?  Absolutely.  But, it is important to make sure you determine your AWW to the penny to make sure you don't get short-changed in your benefits.