There are two o's, oh can you see it?
yes
OS platform by Google, physical body by HTC, for as many carriers as Google can get.
android
No, ostrich is a two syllable word: os-trich.
Android OS for mobile.
Google is not an OS but a website. It does not install software but Windows does.
Chrome OS, which is basically watered-down Linux that only runs Google Chrome.
Google Inc. Introduced Android OS
Yes. and Yes ...
Google Chrome OS is an Operating System based on Linux. It basically is designed to work primarily with web apps.