Ocean can be used for Relax. you are likely to find Coast in/at/on Ocean. Coast is related to Sea. 
Officer is related to Deputy. Deputy is related to Assistant. Assistant is a synonym of Help. 
Relax <--UsedFor-- Ocean <--AtLocation-- Coast <--RelatedTo--> Sea 
Officer <--RelatedTo--> Deputy <--RelatedTo--> Assistant <--Synonym--> Help 