place kick vs free kick

place kick and free kick both are nouns.

Word	Noun	Adjective	Verb	Adverb
place kick	Yes	No	No	No
free kick	Yes	No	No	No

As nouns, free kick is a hyponym of place kick; that is, free kick is a word with a more specific, narrower meaning than place kick:

place kick: (sports) a kick in which the ball is placed on the ground before kicking
free kick: (soccer) a place kick that is allowed for a foul or infringement by the other team

Other hyponyms of place kick include kickoff.

place kick (noun)	free kick (noun)
(sports) a kick in which the ball is placed on the ground before kicking	(soccer) a place kick that is allowed for a foul or infringement by the other team