Labels and tags both play a role in the use of gadgets -- sometimes referred to as widgets -- on your blog. Tags, the HTML building blocks for website design, allow you to create a widget that displays the labels assigned to your various posts on your blog's sidebar. In this situation, the two work in tandem to produce a tangible result on the blog that allows readers to interact with the site by giving them a place to not only see all the labels assigned to various posts, but to navigate them quickly and easily. The tag for the label widget looks like this:
<b:widget id="header" type='HeaderView' locked="yes"/> <b:widget id="myLabels" type='Labels' locked="no" title="My Blog Topics"/>