I thought I'd made up poolbrook , but it actually exists as a suburb of Malvern.
I thought I'd made up hartbeck - but there are people named Hartbeck.
I thought I'd made up firthwater, but someone else made it up before - I found it in a 2007 droplist
Yright, it is speculative - but there is a market, particularly for online traders.
Own Branding your goods on Amazon, for example, makes it hard for people to compare goods for quality and price - and also makes it harder for Amazon to lay down the pricing law when a trader is selling something similar to someone else's goods for a bit more money. If it is your brand you can set your price in defiance of other traders and Amazon.
Now listen carefully - in the US a trade mark can be generated from customary use, and a .com is an easy path to getting a trade mark, if the name is sufficiently distinctive. A sufficiently unique and made-up name is a distinct advantage in this process.
After a year or 18 months of trading under the name poolbrook the owner can write Poolbrook (TM) on his paperwork and legally defend that mark in a law court, without actually registering the mark. Buying the domain can be a lot cheaper than registering a mark, and as long as the site is in use you have clear evidence of your TM usage.
I'm coming to the conclusion that the reason BrandBucket is so picky is to reject any domain with the slightest chance of later TM contention, and they don't like anything which search produces results for. If I'm right, oyonsou is a good one, lemlas and prentan get rejected. But at the BB speed of movement, we won't know until next year.
And that can't be the full story because they accepted ravenham .com - there was a ravenham plc registered in 2011 and dissolved in 2014, I only noticed that today (23/12). And I thought I'd made up Ravenham - not much new, is there?
Until they accept some more domains I remain clueless.