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 Input:
What is the difference between oath, pledge & vow and where should each word be used? An example should suffice.

Ex Output:
To me, the nouns pledge and vow are closer in meaning, to the point of being synonyms. They mean 'a solemn promise' (this is NOAD's main definition for both). Oath, while close in meaning, typically has an additional sense of invoking the divine (e.g., an oath taken on the bible). A verb with close meaning to all three is to swear. In addition to this meaning of 'solemn promise', each of these three nouns has specific additional meanings. an oath maybe refer to a profanity or a swear word vows maybe have specific meaning of commiting oneself to a given life, e.g. marriage or monastic vows pledge has an additional legal meaning, synonymous to surety, bond or guarantee

Ex Input:
Which one is correct in a sentence? He don't He doesn't I guess 'he doesn't' should be correct because he is third person singular but I've seen some people using do with he. Which one is correct?.

Ex Output:
He doesn't is correct, because it is the contraction of He does not. He don't is incorrect, because it it the contraction of He do not. Subject-Verb agreement requires that he goes with does. He don't, however, is slang and certainly used in many places, but you would never see it in professional writing, because of Subject-Verb agreement.

Ex Input:
What's an antonym for 'virgin'? A single word would be preferable.

Ex Output:
This is OP's second question on EL&U, and the previous one refers to the fact that he's 'writing an application that deals with blind studies'. In light of that, I assume OP is effectively looking for a medical term. I'm not a doctor, but these people are, and they use the term coitally experienced. Here's an NGram showing they're not alone. In case anyone objects that (besides not being single-word) coitally experienced applies to males as well as females, I suggest post-coitarchal or perhaps my own neologism coitarchated (which I think would be well enough understood on first encounter by people working in that area). Coitarche (first experience of full intercourse) didn't really enter the lexicon until the early '80s, but it's clearly formed by association with menarche (a pubescent girl's first period), so I think that's good enough to say coitarche and derivatives relate more to the female than the male side of the experience.