Gate is related to Compound. Compound is a synonym of Combination. Combination is related to Outfit. Outfit is a synonym of Kit. 
Bureau is related to Department. Department is related to Depart. Depart is related to Leave. 
Gate <--RelatedTo--> Compound <--Synonym--> Combination <--RelatedTo--> Outfit <--Synonym--> Kit 
Bureau <--RelatedTo--> Department <--RelatedTo--> Depart <--RelatedTo--> Leave 