Thinking is related to Reason. Reason is related to Age. Age is related to Attribute. Attribute is related to Size. 
Greet is related to Meet. Meeting is a form of Meet. Meeting is a synonym of Encounter. 
Thinking <--RelatedTo--> Reason <--RelatedTo--> Age <--RelatedTo--> Attribute <--RelatedTo--> Size 
Greet <--RelatedTo--> Meet <--FormOf-- Meeting <--Synonym--> Encounter 