How does the average Catholic know which Papal statements are "ex cathedra"?

And is "ex cathedra" viewed differently by the priesthood and Catholic theologians than how it is regarded by the average Catholic layperson? For that matter, can (and does) the average Catholic layperson name important ex cathedra pronouncements versa important "non-ex-cathedra" teachings? ... show more And is "ex cathedra" viewed differently by the priesthood and Catholic theologians than how it is regarded by the average Catholic layperson?

For that matter, can (and does) the average Catholic layperson name important ex cathedra pronouncements versa important "non-ex-cathedra" teachings? Are these concepts which are emphasized in Catholic elementary schools in the U.S. today, for example?
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