hurdling vs hurdle

hurdling and hurdle both are nouns.

Word	Noun	Adjective	Verb	Adverb
hurdling	Yes	No	No	No
hurdle	Yes	No	Yes	No

hurdling (noun)	hurdle (noun)
a footrace in which contestants must negotiate a series of hurdles	the act of jumping over an obstacle
	a light movable barrier that competitors must leap over in certain races
	an obstacle that you are expected to overcome

hurdling (verb)	hurdle (verb)
	jump a hurdle