Convinced is a synonym of Confident. Confident is related to Certain. Certain is related to Particular. Particular is similar to Primary. 
Attempt is related to Apply. Apply is related to Pressure. Pressure is related to Weight. Gravity can cause/lead to Weight. 
Convinced <--Synonym--> Confident <--RelatedTo--> Certain <--RelatedTo--> Particular <--SimilarTo--> Primary 
Attempt <--RelatedTo--> Apply <--RelatedTo--> Pressure <--RelatedTo--> Weight <--Causes-- Gravity 