Two families, two different things
A full-face road helmet and a motocross helmet are not versions of each other.
A motocross shell has a peak, an open face designed for goggles, and a chin bar shaped for airflow at low speed and high effort. A road full-face has a visor, a sealed aperture and a shape worked for noise and stability at speed.
Wearing one where the other belongs is not a preference. It is a helmet doing a job it was not approved for.
What settles it
The marking on the shell — the label on the retention strap naming the standard, the approval number and the country.
Not the product title, not the family the shelf files it under, and not the description. This site reports what makers publish, and on helmets the published thing that counts is a sewn-in label.
The thing no helmet listing can settle
Whether it fits. Shell shape differs between makers by more than a size label suggests, and a helmet that rotates or that presses is a helmet that will not be worn.