Derivation is the formation of new words by combining a base word with a wordformation element that by itself is not an independent word. For example in ?be+arbeiten=bearbeiten? and ?Mensch+heit=Menschheit? the word formation elements be- and ?heit are not independent words. The words ?bearbeiten? and ?Menschheit? were created by derivation. Three basic types of derivation are distinguished: suffixation, prefixation, conversion. Derivation also designates derived words: the words ?bearbeiten? and ?Menschheit? are derivations.