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By Ingrid Wisniewska. Ingrid Wisniewska studied languages at Oxford University and has a PhD in language education. Author Ingrid Wisniewska. The 20-billion-word Collins Corpus is the world's largest database of the English language and is updated every month.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.