A spin-on oil filter is a type of oil filter that screws onto the engine block and is secured with a mounting plate and a housing. The filter element is contained within a cylindrical canister that is attached to the mounting plate. To replace the filter, you simply unscrew the old one and screw on a new one.
A cartridge oil filter is a type of oil filter that consists of a replaceable filter element housed in a cylindrical canister. The canister is typically mounted in a filter housing that is bolted to the engine block. To replace the filter, you remove the housing and replace the filter element inside.
Both types of oil filters serve the same basic purpose, which is to filter contaminants and debris out of the engine oil as it circulates through the engine. The main difference is in the way they are installed and replaced. Spin-on oil filters are generally easier to replace, while cartridge oil filters may require a bit more time and effort to change.