 If the term ‘being’ were ambiguous in the way that ‘table’ is, Aristotle’s science of being qua being would be as impossible as a science of tables qua tables. But, Aristotle argues in Γ.2, ‘being’ is not ambiguous in this way. ‘Being’, he tells us, is ‘said in many ways’ but it is not merely (what he calls) ‘homonymous’, i.e., sheerly ambiguous. Rather, the various senses of ‘being’ have what he calls a ‘pros hen’ ambiguity—they are all related to a single central sense. (The Greek phrase ‘pros hen’ means “in relation to one.”)