UN Comtrade contains more breakdowns (mode of transport, 2nd partner country, custom procedure codes) and measurements (trade values in CIF and FOB, trade quantity in secondary unit codes, and gross weight) which opens up more granular and targeted data analysis. Please note the availability of these data parameters may vary depending on the national compilation guidelines.
The following document contains descriptions of data variables including their code lists: Comtrade Plus – Data Items
You may also refer to the following article: List of References and Parameter Codes