How can I compare recent frequent usage across sets of tags?

Screenshot: Comparison of recent frequent usage across set of tags

Our site provides overviews of tags with recent frequent usage in several categories:

Based on how recent frequent usage is calculated, tags with positive recent frequent usage have been discussed more or less intensely within the past year.  

In comparing and contrasting a set of tags, which are most recently discussed?

As illustrated below, you can use 'Filter by term' options (see FAQs explaining filters) to compare and contrast recency frequent usage across sets of tags.

FAQ categories:

Comparing data: copyright image, used under license from