Konwencja czy kreacja? Rzecz o Češtinie 2.0

New words are a natural phenomenon in every language, it’s inevitable effect of cultural and social changings of modern community. In this article author explores lexical material collected and presented in Čeština 2.0, unusually crowd-sourced online dictionary. Special attention is given to the semantic structure and motivation of gathered words. Research show that in analyzed material we can find both, convention and creativity in making new words (at the orthographic, morphological and semantic level). The main question is, how persistent new words are, how many of them will be used by the people in everyday communication.