Assessment is a synonym of Tax. Tax is related to Annual. Annual is related to Rate. Rate is related to Exchange. 
Afford is related to Can. Can is related to Liquid. Liquid is related to Like. Like is a synonym of Prefer. 
Assessment <--Synonym--> Tax <--RelatedTo--> Annual <--RelatedTo--> Rate <--RelatedTo--> Exchange 
Afford <--RelatedTo--> Can <--RelatedTo--> Liquid <--RelatedTo--> Like <--Synonym--> Prefer 