Tractors and Hobby Farming

In my experience a bush hog is a rotary mower, that works fine on grass but it's generally meant for rougher stuff, and meant for leaving what's cut on the field.  Bush Hog is a brand though too, that makes things other than rotary mowers, so there is that confusion.

In my experience still, a mower is what is used to cut grass for hay.  There are at least a couple of basic types, but they have small sharp cutters, more like knives, on a 6 to 8 foot bar that slice the grass off inches above the ground and lay it down neatly for raking into windrows for baling.  A haybine is a variation that may crimp the grass for faster drying and may even windrow it at the same time.  Mowers and bush hog, or brush hogs, are two very different animals, used for different purposes.

A finish mower is usually a multi-bladed deck mower with wheels on the outer edges to keep the deck level across the cut.  It's used on those giant front lawns of estate houses, for example.   

There is some overlap in how you can uses these attachments but depending on what you do on your farm, you would choose the one most appropriate for your needs.  If you have more than one need, you might need more than one attachment.  A bush hog is a good general tool, and probably what you want, but I used to cut hay so I had to have a mower too.  (And a rake and a baler.)

TT