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The top 1,000 vocabulary words have been carefully chosen to represent difficult but common words that appear in everyday academic and business writing. These words are also the most …

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"The Origin of Species by Natural Selection" by Charles Darwin: Essential Words Charles Darwin expounded his theories on evolution in "The Origin of Species by Natural Selection."...

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A complete list of 80 complex words in spelling, pronunciation and and definitions. They are some of the most difficult words know in the English language vocabulary and some of the most …

By analyzing student data and commonly taught texts, Vocabulary.com has compiled this collection of essential vocabulary for students in 6th grade. Master high-frequency, high-utility …

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