What is the difference between 蔵, 倉, and 庫?

Question

The word 【くら】 can be written with any of the kanji 蔵, 倉, or 庫. However, WWWJDIC lists them all under one entry, defined as:

(n) warehouse; cellar; magazine; granary; godown; depository; treasury; elevator;

Is there a difference in nuance or usage between these three kanji, and if so, what?

Update: @istrasci points out that:

[When] 蔵 is used as【〜ぞう】in compounds, it's used to denote ownership or possession.

Whereas compounds with 庫 seem to refer more to a physical storage facility.

Does anybody know about different nuances of the word 【くら】 itself?

Answer 1

Here's what a person who's been immersed in the Japanese culture for 22 years imagine when she sees them without much context.

蔵

• Where it can be found: In the estate of an old family, or as a cellar of a sake brewery. Usually in a place crowded with other buildings (hence the backside of the kura is blurred in the picture).
• What's inside: Something valuable, treasures, or simply old and unused things for special occassions.
• Height: 2-3 stories.

倉

• Where: In the rural districts.
• What's inside: Farming tools, stored rice and unused things (of everyday use).
• Height: 1-2 stories.

庫

Note: I didn't know 庫 can be read as くら. These are the impressions I have about the kanji itself.

• Where: In a house or any other building, or as a part of one.
• What's inside: Something valuable, or other trinkets. Usually contains a single type of things.
• Height: Can vary in size. Usually box-shaped and smaller than 倉.

Answer 2

As far as using them strictly for the word 【くら】, I'm not sure of any nuances. But when 蔵 is used as【〜ぞう】in compounds, it's used to denote ownership or possession.

私蔵　【しぞう】　→　Private collection
家蔵　【かぞう】　→　Household collections
所蔵　【しょぞう】→　To have in your possession (== 所有)
蔵書　【ぞうしょ】→　Collection of books / a library

Whereas compounds with 庫 seem to refer more to a physical storage facility.

車庫　【しゃこ】　→　Garage
金庫　【きんこ／かねぐら】　→　Vault/treasury
武器庫【ぶきこ】　→　Armory

Still the meanings seem to overlap even in a lot of compound words.

Answer 3

新選漢和辞典第六版付録同訓異義要覧八七頁

【くら】

〔倉〕

米【こめ】ぐら。穀物【こくもつ】ぐら。

〔蔵〕

大切【たいせつ】なものをしまっておく所【ところ】。

〔庫〕

武器【ぶき】や車【くるま】をおさめる所【ところ】。

〔府〕

金【かね】や品物【しなもの】をしまう所【ところ】。

〔廩〕

米【こめ】ぐら。屋根【やね】のあるくら。

I still think it should be called 同義異訓要覧.