Before proceeding, it is important to understand a key fact: (support ended in 2017). It is not legally available as a free download from Microsoft’s official website. Any “free” copy you find online is likely a pirated version, a trial that requires a product key, or potentially malware.
If you still choose to install Word 2007, do so only with a legitimate product key, and be aware that Microsoft will not provide security updates, leaving your Windows 10 system exposed. Microsoft Office Word 2007 Free Download For Windows 10