Necessity is a synonym of Fate. Fate is related to Chance. Chance is related to Lucky. 
Straight is related to Edge. Edge is a synonym of Gain. Gain is related to Laundry. 
Necessity <--Synonym--> Fate <--RelatedTo--> Chance <--RelatedTo--> Lucky 
Straight <--RelatedTo--> Edge <--Synonym--> Gain <--RelatedTo--> Laundry 