Improvement is a synonym of Innovation. Innovation is a synonym of Invention. Invention is a type of Creativity. 
Open is related to Public. Public is the opposite of Personal. Personal is related to Presence. Presence is related to Exist. 
Improvement <--Synonym--> Innovation <--Synonym--> Invention --IsA--> Creativity 
Open <--RelatedTo--> Public <--Antonym--> Personal <--RelatedTo--> Presence <--RelatedTo--> Exist 