Suggest is a synonym of Advise. Urge is a type of Advise. Urge is a synonym of Recommend. Recommend is the opposite of Oppose. 
Source is the opposite of Sink. 
Suggest <--Synonym--> Advise <--IsA-- Urge <--Synonym--> Recommend <--Antonym--> Oppose 
Source <--Antonym--> Sink 