Uncover is the opposite of Hide. Hide is related to Shade. 
Fishing is related to Water. you are likely to find Water in/at/on Spit. Spit is a synonym of Tongue. 
Uncover <--Antonym--> Hide <--RelatedTo--> Shade 
Fishing <--RelatedTo--> Water --AtLocation--> Spit <--Synonym--> Tongue 