The term “tag” may be one of the most common in the SEO lexicon, but its meaning is far from homogenous. While most tags are basically HTML code attributes that describe webpage content, it can be hard to distinguish between meta tags, title tags, header tags and others. And then there’s the practice of “tagging” your posts, which is something else altogether. To cut through the confusion, we’ve defined the most common types of tags and provided a brief explanation of each one’s function.