Great question — answering as the UphillTech team:
From that linked site, "Hunting" just seems to be a marketing term, since most of the boots appear in multiple categories. Here in New Zealand, professional hunters usually wear rubber lace-ups. When you spend weeks in the bush at a time, a leather boot will rot and fall apart. People who hunt for a day or a weekend wear the same boots as pretty much everyone else in the bush. About the only distinction a New Zealand store would make in marketing boots is "Non-Alpine" and "Alpine" - the difference being that alpine boots have full-length shanks and mounting points for crampons. For example, Torpedo7 has "Hiking Boots" and "Snow Boots".
Full answer by Greenstone Walker: https://outdoors.stackexchange.com/a/16571 (CC BY-SA 3.0).
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