Burn is related to Smoke. Smoke is the opposite of Clear. 
Conception is related to Idea. Idea is a synonym of Estimate. Estimated is a form of Estimate. Estimated is the opposite of Actual. 
Burn <--RelatedTo--> Smoke <--Antonym--> Clear 
Conception <--RelatedTo--> Idea <--Synonym--> Estimate <--FormOf-- Estimated <--Antonym--> Actual 