What is a corpus?
A language corpus is an electronic collection of authentic texts (written or spoken) easily searchable for various language phenomena (esp. words and collocations) and to display them in their natural context.
The CNC corpora include written contemporary Czech (more than 4 billion tokens), spontaneous spoken language (more than 7 million tokens), diachronic corpus of historical texts and parallel corpus InterCorp that contains translations from or to 30+ languages.