 This case may be far-fetched; but we have a real live cases of it. Field (1973) discusses the case of the term ‘mass’, which seems to have been thought to pick out one property of objects but in fact picks out two that are really very different in character. Deciding whether this is a surprising case of disjunctive reference, or an indeterminacy in reference is no easy task, but the decision has ramifications for whether or not we categorize ‘mass’ as ambiguous or highly sense-general (and if sense-general, what is the general sense?)