Software compatibility error why not running in the system

Hello,
I have recently migrated from Windows 7 to Linux operating system and I am having some troubles with the softwares. The softwares I was using in my operating system are not working in linux.
Is it because linux has different set of software of its own. I need to know if there is a way to run my softwares on linux. Please someone kindly inform me.
Alden Clayton
