Vehicle is related to Horn. Horn is related to Head. Take is a type of Head. Take is related to Measure. 
Keep is a synonym of Care. Nurse is a type of Care. Nurse is related to Professional. 
Vehicle <--RelatedTo--> Horn <--RelatedTo--> Head <--IsA-- Take <--RelatedTo--> Measure 
Keep <--Synonym--> Care <--IsA-- Nurse <--RelatedTo--> Professional 