As nouns the difference between speedboarding and speedboarder
is that speedboarding is an extreme sport which involves racing on a streamline skateboard down steep hills, often on public roads while speedboarder is a person who practices the extreme sport of speedboarding.
speedboarding
English
Noun
(-)
An extreme sport which involves racing on a streamline skateboard down steep hills, often on public roads.
* speedboarder
English
Noun
(
en noun)
A person who practices the extreme sport of speedboarding
*