Bell heather from the mountain slopes tastes nothing like spring blossom from the hedgerows. The same beekeeper, the same bees, the same peninsula, and yet several distinct honeys across a single year, because the bees are working different ground in different seasons.
That is what single-origin means. The honey changes with the season and the flowers, and no other producer comes from this exact landscape. The character of every jar comes from what is flowering here, in this season.