To be compliant with Level AA of the WCAG, headings and labels need to describe the topic or purpose; therefore, pages should use intuitively named subheads.
Section Headings
Section headings should be used to organize the content; therefore, subhead1, subhead2, and bolding in a hierarchical manner to be compliant with WCAG Level AAA.
Web Content Accessibility Guidelines. A part of a series of web accessibility guidelines published by the Web Accessibility Initiative (WAI) of the World Wide Web Consortium (W3C), the main international standards organization for the Internet.