The Broad match option not only includes every variation of those three words, as indicated by Crew Chief, it also includes what Google calls “extended broad match” which pulls in other words that may have similar meanings.
The reason the tool does this is that your AdWords ad could be triggered by any of those extended broad match keywords. The tool is designed for AdWords advertisers so it is configured to provide data based on how an advertiser would use it.
You can still get useful data, but exact match data is the only data that applies to the analysis you seem to be trying to perform.
