As was stated before Bush Hog is a brand name
Home - Bush Hog They make rotary cutters and other implements. Try an experiment - go into a non Bush Hog dealer and ask for Bush hog parts. As a former parts person when asked for Bush Hog parts I would reply we don't carry Bush Hog, you will have to find a Bush Hog dealer. Then they would stand there confused for a moment and then say well it is a Woods bush hog. Then I would explain that Bush Hog is a brand name just as Woods is, but they both make rotary cutters.
If you have even been in parts you understand, if not you will catch on --- someday when you want that dohicky under that whatchamabob behind the airbender.
Years ago had a woman come in and ask for that little thing on the side of their tractor. It went something like this: what model is it? I don't know. What does it look like? A tractor. What color is it? red. Can you call you husband and find out what make and model it is? No, he is out plowing. (no cell phones in the70's) Finally she said You ought to know what it is you sold it to us 20 years ago.
Another time a fellow came in and stated he needed parts for his Minneapolis Moline 165. As relatively new behind the counter I was confused. I stated MM didn't make a 165 tractor but Massey Ferguson did. No he said I know what I have and it is a MM 165. Well after about a half hour of trying to figure out what he had he turned stomped out the door cussing and carrying about how stupid I was and he would never come as we were to dumb to get him parts. Well about an hour later the boss came back and I explained to him what transpired. Then he explained what was wrong, He said he wanted parts for a 335 tractor. the 335 tractor used a 165 engine! MM had a serial number tag on the transmission for the tractor AND a easy to find tag on the engine.
Very few parts required for a Kleenex, Vise grips, or other mentioned brand names that have become commonly used terms.