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Corpus (click to use) Description Re-do last search Compare to last search
COCA 520 million, US, 1990-2015 x x
COHA 400 million, US, 1810s-2000s x x
NOW 5.0 billion, Web news, 2010-yesterday x x
GloWbE 1.9 billion, Web, 20 countries x x
Wikipedia 1.9 billion, Wikipedia x x
BYU-BNC 100 million, British, 1980s-1993 x x
TIME 100 million, US, 1923-2006 x x
SOAP 100 million, US, 1990s-2000s x x
Strathy 50 million, Canada x x
CORE 53 million words, Web genres x x