what is the differrence between 'Play' / 'Live Chess' / 'Daily Chess'?

Hi,

is there any difference? For me this is confusing. 

Daily is correspondence...one day long for one move

What? one day long for one move? it means 1 move daily?

And 'play' vs 'live chess'? Is there any difference? Why is there this two differente menu item? And it seems that there is differente analysis...  

Daily Chess is a maximum time per move and can be 1, 2, 3, 5, 7, or 14 days per move. Moves can be played faster though.

Play > Play is the newer unified interface, where Daily is played and where you can play Live. Eventually it will be the only interface.

Play > Live Chess is the older live interface and you can only play live games there.

Live Chess is for the living. The rest of the modes are for undead cryptids like myself.

hello i am new to chess