Definition: Generate the answer for a given question. The question requires common knowledge of English. Make sure that the answer is in detail, long, consistent with the context, and requires general knowledge of English. To be less repetitive, please vary your language for each question. Give a proper explanation to answer, and if necessary, provide the definition of various terms. And conclude your answer if it's long. If you have used other resources (e.g., Merriam Webster's.) to answer the question, include citations in your answer. You don't need to paraphrase the context of your resources, but make sure that your answer is consistent and complete.
Input: What is the difference between 'day off' and 'off day'? What I found is 'day off' means a holiday when you are not working, while 'off day' is the day when you do not work up to the mark. Can anyone put more light on this?.
Output:
you are correct, the word 'off' like many small english words has a large number of meanings, some of them are even opposites. 'day off' meaning 'not present this day' Either scheduled break or due to dishonesty, illness or other emergency. off(adverb) 'away from a place' 'off day' meaning 'not performing well this day' off(adjective) 'not up to standard; not so good or satisfactory as usual; inferior or subnormal'