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The level of formality used in language — formal, neutral, and informal registers serve different social contexts.
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Common Family Nicknames in English Learn informal ways to call your family members, like "hubs", "wifey", "sis", and "pops". Ways to say "Thanks" from A1 to C2 Learn different ways to express gratitude depending on your English level, from simple "thanks" to advanced "immensely grateful". On vs Upon: What is the difference? A quick explanation of when to use the informal "on" and the formal or old-fashioned "upon".