What's the difference between catchy and written styles in linguistics?

Spoken language and written language are determined by their language styles respectively. Therefore, the difference and connection between spoken and written language is also the difference and connection between spoken and written language.

Written language is produced and developed on the basis of spoken language. Spoken language is the foundation and source of written language. Spoken language is dominant, supplemented by written language. At the same time, spoken language is the driving force for the further development of written language. Spoken language constantly provides fresh materials for written language, so as to promote the development of written language and not be too far away from spoken language, so as to meet people's communication needs.

Written language has a conservative side, and its development and changes always lag behind oral language, and the development of written language should obey the development of oral language. Spoken language is short, vivid, popular and natural, while written language has the characteristics of elegant sentences and tight structure.

Due to the division of labor in long-term use, the styles and colors of some words are gradually different. Although these words have no difference in meaning and connotation, they have strict boundaries of use and cannot be mixed.