Seed is related to Bay. Bay is related to Doll. Doll is related to Room. Room is related to Closed. 
Would is related to Could. Could is etymologically related to Should. Should is the opposite of Ought. 
Seed <--RelatedTo--> Bay <--RelatedTo--> Doll <--RelatedTo--> Room <--RelatedTo--> Closed 
Would <--RelatedTo--> Could --EtymologicallyRelatedTo--> Should <--Antonym--> Ought 