Verisign published their Monthly Top 10 Trending Keywords in .Com & .Net Registrations.
Here they are for December 2016:
Here is how the report is explained by Verisign:
The list was developed by examining keyword registration growth relative to the preceding month, such that those keywords with the highest percentage of registration growth are being reported on. This method is used to eliminate commonly registered keywords, such as “online” and “shop,” to provide a true look at monthly trends. In order to be included, a keyword must experience a minimum threshold in registration growth month over month. Qualifying keywords with the highest volume of registrations are then ranked and included in the list.