One reason you might not find ‘inertial’ is because the only thing they have in common is a laser. For ICF, a long-pulse laser is used like a hammer to heat an

One reason you might not find ‘inertial’ is because the only thing they have in common is a laser. For ICF, a long-pulse laser is used like a hammer to heat and compress the material to fusion conditions. This scheme, as far as I can tell, uses the large EM fields of a short-pulse laser to accelerate a ‘beam’ of ions into cold material to induce fusion.