Earthquake is related to Magnitude. Magnitude is related to Quantity. Quantity is related to Quality. Quality is related to Trait. 
Common is the opposite of Holy. Holy is a synonym of Perfect. 
Earthquake <--RelatedTo--> Magnitude <--RelatedTo--> Quantity <--RelatedTo--> Quality <--RelatedTo--> Trait 
Common <--Antonym--> Holy <--Synonym--> Perfect 