One is shortwave radiation or short wavelength radiation and the other is longwave radiation/long wavelength radiation. The diagram below shows the range of shortwave radiations. There is no proper definition of shortwave radiations as there is no standard cut off for near infrared radiations range.
Cottage cheese is a fresh cheese curd product with a mild flavor. It is drained, but not pressed, so some whey remains and the individual curds remain loose.
Cottage Cheese was typically made as a low fat or skimmed milk cheese but with the more modern addition of cream following the final curd production it may have a butterfat of 4% or higher. A low fat version of .5-2% butterfat as well as a dry curd Cottage Cheese with less than .5% butterfat can still be found.