You’re right, there is a difference between a trailer house (mobile home) and manufactured home.
MH could be a double-wide or modular on a regular pad or even a full basement like ours. We have hit the basement a couple of times during tornado warnings.
Trailer houses are still on wheels and at the mercy of the elements.
Better still....clad the building in 5/8 thick plywood....install triple pain windows and add a mud room porch.