Ash of war affinity (ps4)

Hello, can someone give me better insight on how affinity on ashes of war works. So there are plenty of options granted, but I don’t fully understand the mechanics. In order to get frost build up on my ash of war I have to grant the cold affinity but my physical drops? Will the physical debuff stay that way on my weapon if I’m not actively using that ash of war ?? How does it work please help

Hello, can someone give me better insight on how affinity on ashes of war works. So there are plenty of options granted, but I don’t fully understand the mechanics. In order to get frost build up on my ash of war I have to grant the cold affinity but my physical drops? Will the physical debuff stay that way on my weapon if I’m not actively using that ash of war ?? How does it work please help