To make text bold in HTML, you can use either the <b> or <strong> element. Both elements have the same visual effect, making the enclosed text appear in bold font. However, they have different semantic meanings:

1. <b> Element:

• Purpose: Used for presentation and formatting purposes. It indicates that the enclosed text should be visually emphasized, but doesn't convey any specific meaning about the content.
• Example:
  HTML

  <p>This is <b>bold text</b> using the <b> element.</p>
  

2. <strong> Element:

• Purpose: Used to indicate that the enclosed text is important or significant. It conveys a semantic meaning that the content is emphasized for the user's attention.
• Example:
  HTML

  <p>The most important thing to remember is <strong>be yourself</strong>.</p>
  

Key Differences:

• Semantic Meaning: <strong> conveys a semantic meaning of importance, while <b> is for presentation purposes.
• Accessibility: Screen readers and other assistive technologies may treat <strong> differently, providing additional emphasis or importance to the content.
• Styling: You can apply custom styles to both elements using CSS, but <strong> might have default styles defined by the browser or theme.

Best Practices:

• Use <strong> for emphasis: When you want to convey that the enclosed text is important or significant, use <strong>.
• Use <b> for presentation: If you simply want to make text visually bold without any specific meaning, use <b>.
• Combine with CSS: You can apply custom styles to both elements using CSS for more precise control over their appearance.

Example:

<p>This is <strong>important</strong> text. It is <b>also bold</b>, but without the same semantic meaning.</p>

By understanding the differences between <b> and <strong>, you can choose the appropriate element to effectively emphasize text in your HTML documents while maintaining semantic clarity and accessibility.