Certain is the opposite of Uncertain. Uncertain is derived from Uncertainty. 
Being is related to Private. Private is related to Matter. Matter is related to Building. Building is related to Construction. 
Certain <--Antonym--> Uncertain --DerivedFrom--> Uncertainty 
Being <--RelatedTo--> Private <--RelatedTo--> Matter <--RelatedTo--> Building <--RelatedTo--> Construction 