If I am trying to remove the air rides in my rear, do I replace shocks or struts on 2005 Cadillac DeVille

Every bump you run over in my Cadillac you can feel in my rear because my air rides are leaking. I dont want to replace them,I want to put the factory parts back in. The only problem is I dont know if I'm replacing the shocks or the struts or both?

Asked by for the 2005 Cadillac DeVille
Goggle it ,and see what they offer,I'm pretty sure its both ,there together back there ,arnt they?.
1 more answer
I don't believe the rear has struts. I have had to replace the air shocks twice. They are pretty cheap at $85 a pair at Advanced Auto or O'Reillys and have a lifetime warranty, which I plan on using this time around.