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.

[Q]: 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?.
[A]: 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'


[Q]: This very well may just be outside our lexicon at the moment, due to the fact that space travel is extremely limited, but I am looking for the proper terminology to refer to a space vessel that had been rendered a wreck or a derelict, and was repaired and refitted into a workable vessel. In naval terms, a sunk vessel would be refloated, but that term is awkward to use in space. Something like reatmosphered fits the context, but it is awkward and not in the lexicon (though its form makes its intent clear, and could be readily used). Any ideas?.
[A]: Consider recommission, which is defined (somewhat obviously) by oxforddictionaries.com as 'commission again'. This sense of 'commission', in turn, is defined by oxforddictionaries.com as Bring (something newly produced) into working condition


[Q]: Let's say I'm always hungry, even after I have my meal(s). What would be a word to express that? IMHO, I think starving, famished won't be applicable as these words would only describe the current situation.
[A]:
Consider insatiable [appetite]. Insatiable means: always wanting more : not able to be satisfied (MW) Impossible to satiate or satisfy: an insatiable appetite (TFD) For example, Most children like to eat but for some an insatiable appetite means they always want more, causing real problems for parents. (BBC) The woman is insatiable. When the final whistle blows, she's eaten twenty-three sandwiches in ten minutes, setting a world record (Eat this Book) [Children] may go through phases where they seem to eat relatively little or are insatiable. (Feeding the Under 5s)