Since a "bank" as in "money bank" and a "save" as in "saving money" may occur in similar global contexts, certain global context features effective for recognizing the "money bank" sense may be also effective for disambiguating "save", and vice versa.
with respect to the position-sensitive local context features, these two disambiguation problems may not have much in common since, for instance, we sometimes say "the bank announced", but we rarely say "the save announced".