Play is related to Childhood. Childhood is related to Time. Time is related to Recent. Recent is a different concept from Past. 
Compete is a synonym of Contest. Contest is a synonym of Competition. Competition is related to Defeat. Defeat is related to Game. 
Play <--RelatedTo--> Childhood <--RelatedTo--> Time <--RelatedTo--> Recent <--DistinctFrom--> Past 
Compete <--Synonym--> Contest <--Synonym--> Competition <--RelatedTo--> Defeat <--RelatedTo--> Game 