Talk:Kobushi Factory/@comment-1266850-20150225161153/@comment-131168-20150225163514

I don't know that it's normal, but I guess it makes enough sense in this case. The most common uses for katakana seem to be foreign loan words and sound effects--so factory goes katakana. Kobushi is native Japanese, but they're not using kanji so they're not locked down to the meaning of just one of the words read that way, so it goes hiragana.