The b element represents a span of text offset from its surrounding content without conveying any extra emphasis or importance, and for which the conventional typographic presentation is bold text; for example, keywords in a document abstract, or product names in a review.
A b element must have both a start tag and an end tag.
any element that can contain phrasing elements
Although previous versions of HTML defined the b element only in presentational terms, the element has now been given the specific semantic purpose of representing text “offset from its surrounding content without conveying any extra emphasis or importance, and for which the conventional typographic presentation is bold text”.
Uses HTMLElement.