terminology for depots

[miyakoji]

I was reading the (excellent) article about KIHA40s in the January '11 issue of Tetsudou Fan and in the section about JR West, they use several different terms for what I assume are depots and/or administrative areas: cars in Himeji, Toyooka, and Tottori are assigned to tetsudoubu 鉄道部, Gotoh (up near Yonago) is a sogo sharyojo 総合車両所, the diesel depot just northeast of Okayama Station is a kidousha-ku 気動車区, Hiroshima is an untenjo 運転所, and Toyama and Shimonoseki seem to have their own unique classifications.  The other JR companies apparently have their own variety in terminology, except for JR Tokai which appears to have KIHA40s assigned to only two depots which both are untenku 運転区 (maybe coincidence, who knows).  Does anyone know if there's any significant difference between these, if they're used consistently, etc etc?

[bikkuri bahn]

miyakoji, as a matter of fact, I was casually looking at an article somewhere recently that mentioned this point, and I do remember that the untenjo and perhaps the sogo sharyojo (judging by its name) are facilities that handle various types of rolling stock i.e. both electric and diesel.  A kidousha-ku would handle diesel only.  Tetsudoubu were created to manage rural routes more efficiently, I suppose on the local rather than large region level.  Another example is the Miyahara Sogo untenjo, which was a consolidation of the JNR-era Miyahara locomotive, passenger car, EMU, and freight yard divisions.  I don't know if these categories are consistently applied across all railways, but likely not as strictly as they would have been under the national railways.