Blink is etymologically related to Blank. Blank is a type of Sheet. Sheet is related to Cloth. 
Protest is related to Active. Active is the opposite of Theoretical. 
Blink --EtymologicallyRelatedTo--> Blank --IsA--> Sheet <--RelatedTo--> Cloth 
Protest <--RelatedTo--> Active <--Antonym--> Theoretical 