Are these U.S. cents errors or pmd?

I got both the 1982(with bubble effect on it) and 2008("w" is visible above liberty obverse and "of" is visible on the reverse next to the lincoln memorial) out of some rolls awhile back, are these errors or some kind of pmd? any help is appreciated,thank you.

 

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Here is the 2008 reverse.

 

1982 - zinc rot

2008-D - press job (Another coin has been pressed into yours. Notice how 'of' is reversed and incused.)

 

I believe Hobo is right.