These aren't direct translations but they will help anyway.
When you press start while playing from left to right it's:
Main Menu (Pause Game, Return to Title)
Inventory (You can sort your items here by choosing the category first, then choosing the middle option, then choosing the first option.)
Party (You can change your active party leader and party here.)
Config (Self explanatory)
Controls (Shows game controls.)
When you go a save point it's:
Member Select (Edit your party.)
Reserve Member (Change party order.)
Equipment (Change equipment. There are accessories you buy in Rubrum you can change here.)
Member Settings (Here you can spend AP to have your characters and summon learn new abilities. First option is for players, third is for summons)
Altocrystarium (Upgrade your magic, but I don't think you can do this in the demo.)
Save Game (duh)
Load Game (duh)