Teacher: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.
Teacher: Now, understand the problem? Solve this instance: Are Backronym and Acronym same? I don't understand the difference between these two terms.
Student:
An acronym is a word formed by the initial letters of other words, such as Nato (North Atlantic Treaty Organisation). Note that this is different to an initialism where the initial letters are spelled out, as in BBC for example. A backronym is where the word comes first, and the initial letters are made to fit the word. An example is Alex the parrot (Wikipedia) who to date is the only non-human to spontaneously use language and throws doubt on the notion that a large brain is a prerequisite for language. The name Alex was subsequently said to be 'Avian Language Experiment', which then became 'Avian Learning Experiment. As this was decided (or at least stated) after naming the bird, it is a backronym. Another example would be the USA PATRIOT Act, where : The title of the act is a ten-letter backronym (USA PATRIOT) that stands for Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism Act of 2001 (Wikipedia)