water jump vs obstacle

water jump and obstacle both are nouns.

Word	Noun	Adjective	Verb	Adverb
water jump	Yes	No	No	No
obstacle	Yes	No	No	No

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

water jump: a pool or stream in a steeplechase or similar contest
obstacle: an obstruction that stands in the way (and must be removed or surmounted or circumvented)

Other hypernyms of water jump include pool.

water jump (noun)	obstacle (noun)
a pool or stream in a steeplechase or similar contest	an obstruction that stands in the way (and must be removed or surmounted or circumvented)
	something immaterial that stands in the way and must be circumvented or surmounted