My opinion about phonology

Today, I study with the subject "foundation of linguistics". I have a task that is to give some information about definition of phonology. My opinion about phonology that is the study of the sound system of languages. It is a huge area of language theory and it is difficult to do more on a general language course than have an outline know ledge of what it includes. The phonological system of a language includes an inventory of sounds and their features, and rules which specify how sounds interact with each other. Phonology is just one of several aspects of language . It is related to other aspects such as phonetics, morphology, syntax, and pragmatics. That is just a simple think about phonology. And I want to know more about that.