Different purposes: the main purpose of practical writing is to convey information, express opinions or demands, and persuade or guide readers to take some actions, while the purpose of ordinary writing may be to express personal feelings, thoughts or entertainment.

Different content structure: Practical writing needs to follow a certain format and structure. For example, official documents need to include topics, text, conclusions, etc. And the resume needs to include personal information, education, work experience, etc. , but ordinary words are not.

Different language styles: practical writing needs to use concise, accurate, clear, objective and neutral language, and try to avoid using complex vocabulary and long sentences, while ordinary writing pays more attention to literariness and personalization, and can use rich vocabulary and complex sentence patterns.

Readers' perspectives are different: practical writing needs to be aimed at specific readers, taking into account their background, needs and interests, so as to make the content as easy to understand and accept as possible, while ordinary writing pays more attention to the author's own expression and emotion, and the readers may be more extensive and unspecified.

In a word, practical writing and ordinary writing are different in writing purpose, content structure, language style and reader's angle, and need to be adjusted and handled according to different writing purposes and requirements.