Plz help with Game terms

[N2L Inception]

In Tom Brady's character guides what does NJ and AA mean? sorry for being a noob, i'm trying to learn..

 

[ClawlessVictory]

Neutral Jump and Anti-Air? Hope that helps.

 

[Samsung Crunchy]

Neutral Jump refers to just jumping straight up. (no flipping) Anti-Air refers to attacking an opponent while they are in the air (i.e. Noob's upshadow)