Application is a type of Effort. Struggle is a type of Effort. Struggle is a synonym of Conflict. Conflict is a different concept from Cooperation. 
Hit is a type of Succeed. Hit is related to Drop. Drop is related to Glass. Glass is related to Unit. 
Application --IsA--> Effort <--IsA-- Struggle <--Synonym--> Conflict <--DistinctFrom--> Cooperation 
Succeed <--IsA-- Hit <--RelatedTo--> Drop <--RelatedTo--> Glass <--RelatedTo--> Unit 