No, OpenOffice is a productivity suite similar to Microsoft Office. Linux is an operating system (as is Microsoft Windows). Both have in common that they are Free Open Source Software (FOSS), which means they are free to download and are free to change (because the source code is provided).
OpenOffice runs on Linux as well as Microsoft Windows or Mac OS X and some other operating systems.
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Perfectly safe as it is. But only download it from Openoffice.org
Yes. I use it often.
Yes. All you have to do is give Linux its own partition.
Linux is only a Kernel (Operating System). Different Flavours of linux have different user programs on top of the same linux kernel. A high level example : Ubuntu has the user program(package) GNOME while Kubuntu has KDE, whereas both ubuntu & Kubuntu use the same Linux Kernel.
MS word is a word processor OpenOfficeOrg is an office productivity suite that includes a word processor (and a spreadsheet application, a database application, a presentation application and some other stuff, applications which are also in the Microsoft Office package)
No, Linux is simply the operating system running on the hardware, much in the same way that you could run Windows or another OS on the same hardware.
For the most part they are the same but Embedded Linux is tailored for embedded devices that may have particular hardware configurations and limited resources.
There aren't any errors specific to Linux. Linux has the same types of bugs found in every other operating system.
yes
The same thing as networking in Windows or OS X: The system by which Linux will be able to communicate with other computers.
No. "Kernel programming" is the writing of code that runs in kernel mode. It is not specific to Linux. "Linux programming" usually refers to any programming done in/for the Linux environment, and is not necessarily specific to the kernel.