First of all, it's ビル, not びル. び is hiragana, ビ is katakana:) たてもの is any construction where people can live, stay, work, or store things. So anything like a normal house, office building, parking structure, garage, or huge skyscrapers are たてもの. ビル, abbreviation of ビルディング, is a type of たてもの. It's usually multiple stories(at least three, I think), and built with modern technologies. The usage is mainly office or shops. Some ビルs can have both office space and apartment. I believe you can get a rough idea what does ビル look like by seeing the photos. ↓ http://www.google.com/images?um=1&hl=en&biw=1280&bih=933&tbs=isch:1&sa=1&q=%E3%83%93%E3%83%AB&aq=f&aqi=g10&aql=&oq=&gs_rfai=