Historiographic metafiction is a slightly larger term, encompassing novels that may not center around a historical event, such as Kurt Vonnegut's Slaughterhouse-Five, or not employ the characteristic features of a "romance" as defined by Elias.
Historiographic metafiction refers to novels that might not revolve around specific historical occurrences, such as Kurt Vonnegut's Slaughterhouse-Five, or ones that don't adhere to the conventional traits of a romance as outlined by Elias.