If I erase my hard drive on my MacBook Pro to restore my server, will microsoft word get deleted?

My computer recently has been having issues, I was told to try and reinstall my server after my computer continued to freeze up and dash marks across my screen show up. I was going to erase my hard drive (I already saved all my files and pictures) but I am wondering if there is a way I can do this without microsoft word being deleted. Thanks for your help!!