Infrastructure is related to Bridge. Bridge is a type of Connection. Connection is a synonym of Alliance. Alliance is a synonym of Team. 
Protection is related to Skull. Skull is related to Jaw. Jaw is related to Chin. Chin is related to Body. 
Infrastructure <--RelatedTo--> Bridge --IsA--> Connection <--Synonym--> Alliance <--Synonym--> Team 
Protection <--RelatedTo--> Skull <--RelatedTo--> Jaw <--RelatedTo--> Chin <--RelatedTo--> Body 