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.

[EX Q]: Is there a single word in English to describe someone who is too worried about their health and even thinks they are sick, thus, taking frequent clinical tests or taking too much predictive medication,etc.
[EX A]: The word is hypochondriac and they suffer from hypochondria. noun A person who is abnormally anxious about their health. [ODO] ODO also gives the explanation of using hypo- ('under') rather than hyper- ('over') which one might expect if someone is overly anxious about something: late Middle English: via late Latin from Greek hupokhondria, denoting the soft body area below the ribs, from hupo 'under' + khondros 'sternal cartilage'. Melancholy was originally thought to arise from the liver, gall bladder, spleen, etc..

[EX Q]: What's a word that means 'not knowing everything'? This would serve as a complementary antonym of omniscient, which means having infinite knowledge, or simply 'all-knowing'. Thesaurus.com shows these possible words: stupid (opposite of being clever, which = being omniscient) unknowing (opposite of being knowing, which = being omniscient) fallible (opposite of being infallible, which means 'not able to make mistakes', which = being omniscient, since I can know everything and still make mistakes) erring (which means 'capable of making mistakes', which = being omniscient, since I can know everything and still make mistakes) imperfect (opposite of being perfect, which is a superset of being omniscient... how could I be perfect if I'm both omniscient and fallible?) faulty (which means 'to have fault(s) / defect(s)', is the opposite of 'to have no fault(s) / defect(s)', which means being perfect, which = being omniscient) ignorant (which means 'having inadequate knowledge', is the opposite of 'having adequate knowledge', which = having infinite knowledge) uneducated (opposite of being educated, which = being omniscient) unaware (opposite of being aware, which = being omniscient) uninformed (opposite of being informed, which = being omniscient) Yet, none of them are true antonyms for omniscient. Is there an alternative?.
[EX A]: According to reference.com, the Random House dictionary registers unomniscient as a legitimate word. There are a handful of hits on Google Books which include the following examples: Chaucer deepens Jean de Meun's joke about the God's ersatz divinity: immediately after the God has just issued some clearly unomniscient judgments ... If at every world, God knows at that world only the propositions whose truth-values are modally constant, then it would seem that God is necessarily unomniscient. There are actually two types of unomniscient focus, since the narrator may know the same as or even less than the characters. The impossibility of an unomniscient intelligence demonstrating the supposed contradiction, and thus transforming our universe into an untrustworthy universe, with which one can have no intercourse, is the attitude primarily assumed towards ... Also of interest is the term bounded rationality: Bounded rationality is the idea that in decision-making, rationality of individuals is limited by the information they have, the cognitive limitations of their minds, and the finite amount of time they have to make a decision.

[EX Q]: How do you know when to use singular or plural nouns if they're used as adjectives? i.e. 32-bit computer vs 32-bits computer? teacher union vs teachers union? wedding planner vs weddings planner? sport medicine vs sports medicine? student council vs students council? Which one is correct?.
[EX A]:
You are thinking of noun adjuncts, or attributive nouns. Both Wikipedia and someone from Pearson Education state that traditionally, all attributive nouns are singular. However, the number of plural attributive nouns have increased over the years in a rather arbitrary manner. This means that there is no longer a set rule to determine whether the attributive is singular or plural. Despite this, there is a rough guide that you can use. The attributive noun tends to be plural in the following situations: 1: The singular form might lead to ambiguity an arts degree (a degree in the humanities) as opposed to an art degree (a degree in fine art) [I believe that this situation is what is referred to on wikipedia as 'lexical restrictions', providing the example of 'arm race' vs 'arms race'] 2. There is no singular form of a noun (in pluralia tantum) a customs officer 3. There is a need to denote variety a soft drinks manufacturer [but] a car manufacturer 4. A topical issue comes forth, often in newspaper stories... the tapes issue the tapes compromise the Watergate tapes affair the White House tapes mystery and other examples, including jobs cut. [I am not entirely sure what the point of this fourth category is] [Source: Pearson Education , directly quoted apart from what is enclosed inside square brackets] To this list I add my own: 5. [The attributive noun is plural if] it comes from the possessive form of the word teachers union ladies man However, this is more of an explanation rather than a rule you can use. There are too many exceptions, and you are unlikely to know the origins of the word. It doesn't make sense that it is teachers union but not students council. Note that we often 'choose by ear and it doesn't matter (employee lounge, employees lounge)' (Chicago Manual of Style). I would argue that it would be easier to just look it up every time and memorise words instead of trying to find a rule or categorise them. Even as a native speaker, I was not entirely sure whether it was 'sport medicine' or 'sports medicine' before looking it up. If you find yourself completely lost and without internet, go with the singular form because it is the traditional form and more common.