high jump vs jumping

high jump and jumping both are nouns.

Word	Noun	Adjective	Verb	Adverb
high jump	Yes	No	No	No
jumping	Yes	No	No	No

As nouns, jumping is a hypernym of high jump; that is, jumping is a word with a broader meaning than high jump:

high jump: the act of jumping as high as possible over a horizontal bar
jumping: the act of participating in an athletic competition in which you must jump

high jump (noun)	jumping (noun)
the act of jumping as high as possible over a horizontal bar	the act of participating in an athletic competition in which you must jump
a competition that involves jumping as high as possible over a horizontal bar	the act of jumping; propelling yourself off the ground