1. Professional Software is not just the program developed for a customer
2. The software is meant for a specific purpose
Explanation:
Professional software is not just the program developed for a customer. Infact professional software along with executable code will also contain documentation, configuration of data - all that is required to make the operation of programs correct and accurate. Generally such a software do contain separate files for program and configuration purposes. Documentation of the professional software consists of several topics such as structure of the system, user documentation with all the information required for user to work on that. Hence professional software is not just a set of programs developed for customer - but it is a comprehensive information collection and set up tool set designed for the usage of a customer as well.
2. Custom software development are commisssioned by a specific customer for his specific requirements. Whereas Generic software products are general software applicable for diverse customers for their requirements and hence can be sold in open market for any customer. And hence the aplication development of both the software products mentioned above also do vary, in the first case specifications will be completely provided by the customer and will be controlled as well by the cusotmer
