Greek is similar to Latin. Latin is related to Post. Post is a synonym of Publish. Publish is a synonym of Release. 
Activist is a type of Person. Person is related to Tough. Tough is related to Man. 
Greek <--SimilarTo--> Latin <--RelatedTo--> Post <--Synonym--> Publish <--Synonym--> Release 
Activist --IsA--> Person <--RelatedTo--> Tough <--RelatedTo--> Man 