Desk is related to Small. Small is related to Watch. Watch is related to Clock. 
Weakness is derived from Weak. Weak is a synonym of Vulnerable. Person does not want (to) Vulnerable. 
Desk <--RelatedTo--> Small <--RelatedTo--> Watch <--RelatedTo--> Clock 
Weakness --DerivedFrom--> Weak <--Synonym--> Vulnerable <--NotDesires-- Person 