high jump vs field event

high jump and field event both are nouns.

Word	Noun	Adjective	Verb	Adverb
high jump	Yes	No	No	No
field event	Yes	No	No	No

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

high jump: a competition that involves jumping as high as possible over a horizontal bar
field event: a competition that takes place on a field rather than on a running track

high jump (noun)	field event (noun)
the act of jumping as high as possible over a horizontal bar	a competition that takes place on a field rather than on a running track
a competition that involves jumping as high as possible over a horizontal bar