Groundglass opacities within the lungs what does it mean?

I recently had an annual CT Scan done. We were just checking to see if 3 black spots were still on my lower left lung or had they grown. The CT Scan came back with several abnormality's. Such as Ground glass opacities within the lungs probably on the basis of motion and
examination acquired in expiration. I have had this awful cough since Nov 2022. I have checked my CT Scans from previous years. Ground glass opacities was never mentioned.