Argh!!! I just can't live in a world where the language works like this:

店 = みせ = store/shop/place of business

Fine. Easy. No problem...thats a basic yon-kyuu level kanji.

But this?

書店 = しょてん = bookstore
and
本店 = ほんてん = head office

Eh?

Oh, and be careful not to confuse 書店 with 商店　(pronounced "しょうてん" - notice the extra う) which means "a shop".