what is the difference between PSN card and PS plus card?

-PlayStation Network Card: A PSN card is a card where you can buy at retailers such as Gamestop, mom & pa gaming stores, etc. Instead of using a credit or debit card you can load your own physical cash on to the card where there will be a redeem code to redeem on the PSN store back at your house. This will add either $25 or $50 depending on what card you bought. This is essential to people who don't have credit cards or debit cards.

-PlayStation plus card: A PS plus card is a card where you can purchase with PlayStation Network money or at retailers. This will give you access to games you can buy cheaper on the PlayStation Network; not only that, but sometimes Sony will give away free games and a free full game trials to PlayStation plus members. Such as Far Cry 2 for example, user of PlayStation Plus don't have to pay full price for the game because they can play the "full free trial game." With PlayStation Plus you will have to pay a yearly or monthly subscription in order to remain a member.

Hope that helped :D

Psn Plus Card

PSN cards of $10, $20 or $50 can be used to buy things on the psn store instead of paying with a credit card and a PS plus card is used to get a playstation plus subscription.

Playstation Network Plus

Better hardware basically - touch screen, touch pad on back, dual thumb sticks, accelerometer, capacity to play augmented reality games, remote play between vita and ps3, 3G capacity for that model, built in front and rear cameras, mic, no built in hard drive, new proprietary slots for new proprietary memory card, power cable and vita game card. Software updates - new web browser which unanimously has been declared to be awful; new menu (UI) design, ability to keep in-game play while using some other apps (some apps you cant), main menu is made up of apps and a tabbed view of what you have running, apps for non-gaming stuff, Sony Entertainment Network - PSN store for game downloads (game is displayed separate from the online pass) including some PSP titles, Music unlimited, Netflix, cross play with some PS3 games (i.e. cross platform multiplayer), updated remote play with ps3, chat on the PSN.... Theres most probably a few more...