What/How about+ noun?

[Crowned 91]

Hello!

I want to say "I know that both expressions exist. What about their meaning? Do they convey two different ideas?"
Is it possible to say "What about their meaning"? Can I also say "How about their meaning?"


Thank you in advance!

 

[probus]

Certainly both expressions exist in natural speech. The difference in meaning is subtle. In AmE I would say that "what about" demands a more serious response than "how about". You can say "How about those (pick a professional sports team)" without expecting any serious response.