Confess is a synonym of Concede. Concede is a type of Give. Give is the opposite of Pick. Pick is related to Hold. 
Scientific is related to Theory. Theory is related to Value. Value is related to Cash. 
Confess <--Synonym--> Concede --IsA--> Give <--Antonym--> Pick <--RelatedTo--> Hold 
Scientific <--RelatedTo--> Theory <--RelatedTo--> Value <--RelatedTo--> Cash 