Tags & chips
Small rounded pills that label things. They look alike on purpose, but they do different jobs: a badge states a fact, a tag links to more.
Badge
Static metadata that is not a link: a technology on a work-experience card, a language on a post. Neutral fill, 8-pixel radius, no hover.
<span class="badge">React Native</span> Post tag
A taxonomy link, one pixel tighter at the corners than a badge. It greens its border and text on hover because it takes you somewhere; a badge does not.
<a class="post-tag" href="/blog/tags/testing/">Testing</a> When to use
Do
Don’t
Do
Don’t
Do
Don’t
Where it lives
Badge: .badge (grouped in .badge-group). Post tag: .post-tag (grouped in .post-tags). Both share the neutral --badge-bg / --badge-text pair.
Two cousins complete the pill family: the tag-cloud pill on the browse page, a 44-pixel tap target with a mono label and a tinted count bubble; and the series chip, an art disc beside a label, used by the search palette and the blog’s browse row.