One is oval shaped and white with G600 stamped on one side. The other side is blank. I think it might be a prescription sized dose of ibuprofen but can't remember.
You're right.
This pill is IBUPROFEN 600 MG
Imprint Code G600
Description white, oval tablet
Info at
http://ibuprofen.drugs.com The other is oval and beige with N 520 on one side and 500 on the other side.
According to RxList (I have been unable to confirm it anywhere else on the internet) this pill is
Naproxen 500mg
Imprint Code: 500 / N520
Drug/Strength/Manufacturer: Naproxen 500mg - Novopharm
Description: Yellow/Peach - N Over 520 - Tablet
Info at
http://naproxen.drugs.com