Accusation is a synonym of Charge. Charge is related to Electronics. Electronics is a type of Physics. 
Capital is related to Hall. Hall is the opposite of Cabin. Cabin is related to Cottage. 
Accusation <--Synonym--> Charge <--RelatedTo--> Electronics --IsA--> Physics 
Capital <--RelatedTo--> Hall <--Antonym--> Cabin <--RelatedTo--> Cottage 