Related is related to Sound. Sound is a type of Announce. Announce is a synonym of Proclaim. Proclaim is a type of Entitle. 
Block is related to Guard. Guard is a synonym of Protection. 
Related <--RelatedTo--> Sound --IsA--> Announce <--Synonym--> Proclaim --IsA--> Entitle 
Block <--RelatedTo--> Guard <--Synonym--> Protection 