To use Google search volume data to get a sense of absolute search data, there are a few strategies you can employ:
✓ Use multiple data sources: While Google's search volume data may not provide exact numbers, there are other data sources you can use to triangulate a more accurate estimate of search volume. These might include data from other search engines, market research firms, or web analytics tools.
✓ Use Google's Keyword Planner tool: Google's Keyword Planner tool allows you to enter a keyword or phrase and receive an estimate of its search volume, as well as related keywords and their volumes. While the exact numbers may not be precise, this tool can provide a general sense of how popular a particular keyword or phrase is.
✓ Use trend data: Google Trends provides data on how search interest for a particular keyword or phrase has changed over time. By looking at the trend data for a particular keyword, you can get a sense of whether it is increasing or decreasing in popularity, which can help you make informed decisions about how to target your SEO efforts.