swimming kick vs kicking

swimming kick and kicking both are nouns.

Word	Noun	Adjective	Verb	Adverb
swimming kick	Yes	No	No	No
kicking	Yes	No	No	No

As nouns, kicking is a hypernym of swimming kick; that is, kicking is a word with a broader meaning than swimming kick:

swimming kick: a movement of the legs in swimming
kicking: a rhythmic thrusting movement of the legs as in swimming or calisthenics

Other hypernyms of swimming kick include kick.

swimming kick (noun)	kicking (noun)
a movement of the legs in swimming	the act of delivering a blow with the foot
	a rhythmic thrusting movement of the legs as in swimming or calisthenics