Cycle is etymologically related to Wheel. Cycle is related to Month. Month is related to Related. 
Friend is a synonym of Mate. Mate is a type of Software. Soft is etymologically related to Software. Soft is a synonym of Mild. 
Wheel <--EtymologicallyRelatedTo-- Cycle <--RelatedTo--> Month <--RelatedTo--> Related 
Friend <--Synonym--> Mate --IsA--> Software <--EtymologicallyRelatedTo-- Soft <--Synonym--> Mild 