What I find really interesting is that these words are not peculiar to Scotland as I had thought but are, instead, common usage across NE England and mainly Eastern Scotland (Glaswegian is a language in itself). No one from the West Highlands of Scotland, nor the NW of England has chipped in with their knowledge or use of these words. This makes me wonder if there is a Scandinavian link too because in the olden days it was easier to trade/travel by sea across the North Sea than overland, until the railways arrived, with western areas of the UK. I do know that words such as Haar for sea mist and Stoor for dust are shared with Scandinavian languages.
My Geography teacher (nearly 60 years ago) told us that Geography underpins every subject History, Sciences, Languages, technology. Even the spread of cultures/religions is influenced by geographic factors. In Kenya, native languages have no words for sunset, twilight, gloaming, days dawning, etc. Instead, they have several words for the sudden onset of darkness. This means that their literature/culture does not have concepts like being in your 'twilight years' nor 'Golden Years', nor even the 'Dawn of a New Age' or something slowly dawning on you. I suppose they would use creeping up on you instead. Fascinating isn't it?