Over time, "stereotype" became a metaphor for any set of ideas repeated identically or with only minor changes. In fact, "cliché" and "stereotype" were both originally printers' words, and in their printing senses became synonymous. However, "cliché" originally had a slightly different meaning, being an onomatopoeic word for the sound that was made during the process of striking a block into molten type–metal during another form of stereotyping, later called in English "dabbing". The term "stereotype" derives from Greek στερεός ("stereós") "solid, firm" and τύπος ("túpos") "blow, impression, engraved mark" and in its modern sense was coined in 1798.