Minimal is a synonym of Minimum. Minimum is a type of Limit. Limit is related to Restrict. Restrict is a synonym of Bind. 
Sodium is related to Salt. Salt is a type of Crystal. Crystal is a type of Rock. Rock is related to Moon. 
Minimal <--Synonym--> Minimum --IsA--> Limit <--RelatedTo--> Restrict <--Synonym--> Bind 
Sodium <--RelatedTo--> Salt --IsA--> Crystal --IsA--> Rock <--RelatedTo--> Moon 