Moon is related to Full. Full is related to Amount. Amount is related to Concept. Concept is a synonym of Notion. 
Register is a type of Regulator. File is a type of Register. 
Moon <--RelatedTo--> Full <--RelatedTo--> Amount <--RelatedTo--> Concept <--Synonym--> Notion 
Regulator <--IsA-- Register <--IsA-- File 