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]: I've been looking around the Internet. Some websites say that foods is incorrect but others say it is correct.
[EX A]: Food in its commonest sense is a non-countable noun, with all the effects of that. It's already a plural. You would eat 'some food' not 'a food'. You would say 'less food' not 'fewer foods'. However, there is a less common usage where 'a food' means 'a type of food': 'Cheese is a food made from milk' ... and in this form, you can pluralise it ... 'Italy is the source of many delicious foods -- pizza, pasta, salami, biscotti...' For comparison, think of 'a people' - Are there meta-plurals beyond 'peoples'?

[EX Q]: 'Vomit' is not a recent addition to English, and nor does it have a peculiar pronunciation. Yet, the past tense of vomit does not follow the notion that a vowel followed by a consonant and emphasis on the consonant. (For example, past tense of 'emit' is 'emitted'.).
[EX A]: The crucial thing is that the last but one syllable of 'vomited' has no stress. Not even secondary stress. So the final consonant doesn't double. By contrast, the last but one syllable of 'emitted' has stress (because the last syllable of 'emit' has stress). This issue is raised in this question, to which a good answer is given. Compare: (No stress) marketed, budgeted, edited (Secondary stress) combatted, formatted (Primary stress) patted, petted, pitted, potted, rutted

[EX Q]: 'Jealousy' contains most of the vowels but lacks 'i'. Is there a word in the English language that contains every vowel (and preferably 'y')?.
[EX A]:
I totally rule at Clockwords by using sequoia and facetiously. Wikipedia used to have a list of words containing all the vowels, but the article has since been deleted. Some of the fun facts it mentioned included: The word Iouea, a genus of sea sponges, contains all five regular vowels and no other letters. [...] There are many words that feature all five regular vowels occurring only once in alphabetical order, the most common being abstemious and facetious. [...] Considering y as a vowel, the suffix -ly can be added to a number of these words; thus the shortest word containing six unique vowels in alphabetical order is aeriously, with nine letters (OED)[.]