Mess is the opposite of Organize. Organize is a synonym of Prepare. 
Small is related to Pond. Pond is a synonym of Pool. Pool can be used for Drown. Drown is a synonym of Flood. 
Mess <--Antonym--> Organize <--Synonym--> Prepare 
Small <--RelatedTo--> Pond <--Synonym--> Pool --UsedFor--> Drown <--Synonym--> Flood 