For a resource poor language like Hindi, it becomes very difficult to bracket a noun sequence using approaches which are only based on corpus or lexical database. For semantic knowledge, power of both type of resources is needed to be combined. Therefore, affinity in between two nouns is preferred to be measured using backoff association which is the combination of lexical and conceptual association. Also, syntax is important for this task. But syntactic rules do not work for the compound nouns which is a special case of noun sequences and it may also occur as the sub-sequence. Using hybrid approach, accuracy of 86.33% has been obtained.