Week is the opposite of Strong. Strong is related to Horse. Horse is related to Work. 
Steam is the opposite of Cold. Cold is similar to Freeze. Freeze is a synonym of Suspend. 
Week <--Antonym--> Strong <--RelatedTo--> Horse <--RelatedTo--> Work 
Steam <--Antonym--> Cold <--SimilarTo--> Freeze <--Synonym--> Suspend 