Old English poetry is characterised by a number of poetic tropes which enable a writer to describe things indirectly and which require a reader imaginatively to construct their meaning. The most widespread of these figurative descriptions are what are known as kennings. Kennings often occur in compounds: for example, hronrad (whale-road) or swanrad (swan- road) meaning 'the sea'; banhus (bone-house) meaning the 'human body'. Some kennings involve borrowing or inventing words; others appear to be chosen to meet the alliterative requirement of a poetic line, and as a result some kennings are difficult to decode, leading to disputes in critical interpretation. But kennings do allow more abstract concepts to be communicated by using more familiar words: for example, God is often described as moncynnes weard ('guardian of mankind').
