【正确答案】：
UNLIKE RADIATION WHERE EACH OF THE DERIVED MEANINGS IS DIRECTLY CONNECTED TO THE PRIMARY MEANING, CONCATENATION DESCRIBES A PROCESS WHERE EACH OF THE LATER MEANING IS RELATED ONLY TO THE PRECEDING ONE LIKE CHAINS. THOUGH THE LATEST SENSE CAN BE TRACED BACK TO THE ORIGINAL, THERE IS NO DIRECT CONNECTION IN BETWEEN. 
RADIATION AND CONCATENATION ARE CLOSELY RELATED, BEING DIFFERENT STAGES OF THE DEVELOPMENT LEADING TO POLYSEMY. GENERALLY, RADIATION PRECEDES CONCATENATION. IN MANY CASES, THE TWO CASESS WORK TOGETHER, COMPLEMENTING EACH OTHER. 
【题目解析】：不同于辐射其中每个派生意义直接连接到主要意义，连锁型描述了一个过程，其中每个后面的意义只与前一个相关的链。虽然最新的意义可以追溯到原始意义，但两者之间没有直接的联系。辐射和连锁型是密切相关的，是导致多义现象发展的不同阶段。一般来说，辐射先于连锁型。在许多情况下，这两种情况一起起作用，互补。