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.

Example Input: Possible Duplicate: What is the difference between an expression and a phrase? Difference between 'phrase' and 'idiom' What is the difference between a phrase, an idiom and an expression? I am looking for the context where one is more appropriate than the rest. I've been using idiom and phrase more or less interchangeably.
Example Output: This question asks nearly the same thing. This is the difference between an idiom and a phrase: A phrase is 'a small group of words standing together as a conceptual unit', while an idiom is 'a group of words established by usage as having a meaning not deducible from those of the individual words'. So, the difference is that an idiom as an established meaning not directly linked to the individual words. Any idiom is a phrase. As an example, 'raining cats and dogs' is both an idiom and a phrase. 'A herd of cats' is a phrase but not an idiom. Expression has about the same meaning as phrase, except it is usually used of a phrase which is in common use. So an idiom is a certain sort of expression, which in turn is a subset of phrase: idiom > expression > phrase.

Example Input: Possible Duplicate: 'Unregister' vs 'Deregister' I'm just wondering what the consensus would be on the antonym of register. The intended use of the word is for a website. Users can register for the site, and should they desire, they can also 'unregister'. Can you list a set of words that would fit the problem domain?.
Example Output: There are several words including 'cancel', 'eradicate', 'rescind', but I think the most relevant word is: Deregister Taken from here

Example Input: If I'm converting something from analogue to digital, I digitise it. What am I doing if I convert from digital to analogue?.
Example Output:
You reconstruct, as in a reconstruction filter found in digital-to-analog converters: a reconstruction filter is used to construct a smooth analog signal from a digital input

