Difference between Ultrasonic waves and sound waves.

[Dolinting]

Hello everyone, Can I seek help on the difference of ultrasonic waves and sound waves? I find it confusing.

 

[ORF]

Hello

Ultrasound is sound waves with frequencies higher than the upper audible limit of human hearing.
https://en.wikipedia.org/wiki/Ultrasound

Regards,
ORF

 

[Dolinting]

Thank you very much.