Enhance is a synonym of Improve. Improvement is derived from Improve. Improvement is related to Paint. 
Capability is derived from Capable. Capable is related to Could. Could is the opposite of Would. 
Enhance <--Synonym--> Improve <--DerivedFrom-- Improvement <--RelatedTo--> Paint 
Capability --DerivedFrom--> Capable <--RelatedTo--> Could <--Antonym--> Would 