post-production has no description whatsoever.
After looking at What are tag synonyms and merged tags? How do they work?, We can make post-processing the master and post-production the slave synonym. This would seem to be a logical relationship given the number of questions tagged respectively. This relationship can be easily removed, if deemed to be incorrect.
If, after some time, everyone is happy with this arrangement, then the two will be merged.
Does that sound like a plan and does anyone have any objections..?
1 This question was moved from my answer to Naming convention for tags with CamelCase or Pre-Fix