An Lon Dubh wrote:
Another thing to keep in mind is that when an noun is used as an adjective, it doesn't inflect further.
Or perhaps it's easier to say that it's not an adjective. I was never comfortable with the English grammar books that called the "boat" in the English "boat race" an adjective, because it doesn't feel like one to me.
I can kind of see why they'd call a genitive an "adjective" in this case...
Quote:
Críoch an Ráis Bhád = The end of the boat race.
... after all, if it's a typical "genitive", why does
Rás inflect into genitive?
So it seemingly breaks the rules of the genitive... but it clearly doesn't follow the rules of the adjective either!
I reckon the best way of thinking about it is as follows...
First, consider English words like "toothpaste" and "toothbrush". In these words, the two nouns are written together because only the first noun gets stress. Then you've got terms like "car wash" and "boat race", where we pronounce, as before, with stress only on the first. And actually, a lot of people do write them without spaces (but Firefox's inbuilt spellchecker doesn't!).
This is what is often termed a "close compound" -- two words that are used together so often that they become a single, indivisible item. You wouldn't say "pass me the brush" when you want a toothbrush, would you? It's a
toothbrush and nothing else.
But what constitutes a close compound can be a little fuzzy, because when someone wins a
boat race, you could quite naturally say just that they'd won
the race.