Base is a different concept from Acid. Acid can be Fun. Fun is related to Enjoy. Enjoy is related to Derive. 
Section is a synonym of Skin. you are likely to find Skin in/at/on Fruit. Fruit is related to Apply. Apply is related to Reply. 
Base <--DistinctFrom--> Acid --HasProperty--> Fun <--RelatedTo--> Enjoy <--RelatedTo--> Derive 
Section <--Synonym--> Skin --AtLocation--> Fruit <--RelatedTo--> Apply <--RelatedTo--> Reply 