Care is related to Medical. Medical is related to Disease. Disease is the opposite of Healthy. 
Bid is a type of Seek. Seek is a synonym of Search. Search is a type of Examination. 
Care <--RelatedTo--> Medical <--RelatedTo--> Disease <--Antonym--> Healthy 
Bid --IsA--> Seek <--Synonym--> Search --IsA--> Examination 