Collection is related to Keep. Keep is a type of Stay. Stay is the opposite of Fly. Fly is related to Action. 
Spouse is etymologically related to Sponsor. Sponsor is a type of Support. Promote is a type of Support. Foster is a type of Promote. 
Collection <--RelatedTo--> Keep --IsA--> Stay <--Antonym--> Fly <--RelatedTo--> Action 
Spouse --EtymologicallyRelatedTo--> Sponsor --IsA--> Support <--IsA-- Promote <--IsA-- Foster 