Buck is a synonym of Bone. Bone is related to People. People wants (to) Swim. Swim is related to Fitness. 
Visible is related to Clear. Clear is a synonym of Empty. Empty is related to Pour. 
Buck <--Synonym--> Bone <--RelatedTo--> People --Desires--> Swim <--RelatedTo--> Fitness 
Visible <--RelatedTo--> Clear <--Synonym--> Empty <--RelatedTo--> Pour 