Measurement is related to Narrow. Narrow is related to Small. Small is related to Stem. 
Reveal is a synonym of Disclose. Disclose is a synonym of Uncover. Uncover is the opposite of Cover. Feather is a type of Cover. 
Measurement <--RelatedTo--> Narrow <--RelatedTo--> Small <--RelatedTo--> Stem 
Reveal <--Synonym--> Disclose <--Synonym--> Uncover <--Antonym--> Cover <--IsA-- Feather 