What is phonologhy in english language​

Phonology is the study of the basic sounds and speech patterns of a language.

The English language is full of words and sounds borrowed from other languages, giving it a mixture of sound patterns

Phonology is a branch of linguistics that studies the structure of the sound system of a language and the functioning of sounds in a language system. The basic unit of phonology is the phoneme, the main object of study is the opposition of phonemes, which together form the phonological system of the language.