Rewrite in your own words:
Products are the goods and services produced and processes are the facilities, skills and technologies used to produce them. Production processis are essential to produce products and the available procesies limit what proclucts can be protuced.
Production function or operations function is the primary function of an industrial enterprise. It is also known as conversion process of transformation process which transforms some of the inputs (raw materials and components) into outputs which are useful for the consumers.