It is sometimes held that semantic disputes are not genuine disputes at all. But very often they are regarded as perfectly genuine, e.g., in philosophy. One might well wonder, of course, exactly what makes a genuine dispute.
It is also sometimes held that, when a semantic dispute arises, the focus of the debate should switch from the original thesis to the meaning of the terms of which there are different definitions (understandings, concepts, etc.).
As a purely hypothetical example, one disputant, call him "Tim", might maintain that the United States has the highest standard of living in history. Suppose Joshua maintains the precise contradictory of that claim. Being reasonable people, they agree on all relevant statistical results, but they disagree about the meaning of "standard of living": Tim holds that "per capita income" is the meaning of (or at least an infallible or direct indicator of) "standard of living", while Joshua disagrees with this. In this case, Tim and Joshua have (suffer, are engaging in) a semantic dispute.
Other common traps for semantic disputes includes, but are not limited to, the usage of words such as liberal, democrat, conservative, republican, free, welfare or socialist whose meaning in English, or in the United States, often is quite different from how the similar words are understood in other languages.