So, you are right, nabob dave. It is a freewheel.
I don't know why some people call them freewheel cassettes ? I always thought it was one or the other.
Thanks for your help.
Now if I can figure out if an 8 speed FREEWHEEL will work.
I do have a 7 speed 14-28 . The website says it is a cassette. I haven't looked. Maybe it is a freewheel. My question is whether an 8 speed will fit. Be it a cassette or freewheel.