Horn is related to Point. Point is related to Moral. Moral is similar to Mental. Mental is similar to Psychological. 
Brush is a type of Clean. Brush is a type of Remove. 
Horn <--RelatedTo--> Point <--RelatedTo--> Moral <--SimilarTo--> Mental <--SimilarTo--> Psychological 
Clean <--IsA-- Brush --IsA--> Remove 