Normally you say Eis
Eis to both of it. But if you are in a special situation where it is not clear because of the context (what is the case in most situations) you can distinguish it with Speiseeis
Speiseeis or Eiswürfel
.Eiswürfel. While Speiseeis
Speiseeis is very expressive, Eiswürfel
Eiswürfel is more often also used in normal situations.