Inserting partitions, on the other hand, refers to the process of adding new partitions to a partitioned table. This is done using the INSERT INTO command and specifying the partition columns for the new data. Hive will then create the new partition directories on HDFS and move the data into the appropriate location.
But Loading partitions refers to the process of bringing data into a partitioned table. This can be done using the LOAD DATA command or by copying data files directly into the appropriate partition directories on Hadoop Distributed File System (HDFS). Loading partitions assumes that the data is already present in the correct directory structure and format for Hive.