What makes a weapon anti-air or anti-tank? Would anti-air be effective against tanks? Could we create one weapon that covers both, or even all possible targets?

Question

What makes a weapon anti-air or anti-tank? Would anti-air be effective against tanks? Could we create one weapon that covers both, or even all possible targets?

In: 864

Answer 1

Anti-air: high speed, high maneuverability, long range, uses a proximity fuse, concussive force does a lot of damage along with shrapnel.

Anti-armour: requires a direct hit, uses a shaped charge, short range.

Anti-personnel: air burst, fragmation, low explosive yield. Cheap.