Difference between strong text and bold text is

Answer 1

It's a question of semantics: if you say "bold" you expect text wich is bold, and nothing else... while with "strong", it'll be not surprising if the text isn't bold, but on a different color and/or police or whatelse.
Html5 recommand to avoid <b> and prefer <strong>, relative to the semantic priority preference ^^ ( but <b>'s still valid tag )

Answer 2

They have the same effect on normal web browser rendering engines, but there is a fundamental difference between them.
Think of three different situations:

- web browsers
- blind people
- mobile phones

"Bold" is a style - when you say "bold a word", people basically know that it means to add more, let's say "ink", around the letters until they stand out more amongst the rest of the letters.

That, unfortunately, means nothing to a blind person. On mobile phones and other PDAs, text is already bold because screen resolution is very small. You can't bold a bold without screwing something up.

<b> is a style - we know what "bold" is supposed to look like.

<strong> however is an indication of how something should be understood. "Strong" could (and often does) mean "bold" in a browser, but it could also mean a lower tone for a speaking program like Jaws (for blind people) or be represented by an underline (since you can't bold a bold) on a Palm Pilot.

Answer 3

There isn't any difference really, it's just a matter of semantics/syntax