Screw is a type of Tighten. 
Ordinary is related to Old. Old is related to Village. Village is related to Thanks. Thanks is etymologically related to Thought. 
Tighten <--IsA-- Screw 
Ordinary <--RelatedTo--> Old <--RelatedTo--> Village <--RelatedTo--> Thanks --EtymologicallyRelatedTo--> Thought 