Coast is related to Form. Form is related to Usual. Usual is related to Normal. Normal is the opposite of Ill. 
Adapt is a type of Change. Change is related to Democratic. Democratic is a different concept from Independent. Independent is related to Being. 
Coast <--RelatedTo--> Form <--RelatedTo--> Usual <--RelatedTo--> Normal <--Antonym--> Ill 
Adapt --IsA--> Change <--RelatedTo--> Democratic <--DistinctFrom--> Independent <--RelatedTo--> Being 