Denshi Jisho — Online Japanese dictionary

擁護 ようご 1: protection; advocacy; support; defence; championship; vindication;
2: (Suru verb) to protect (e.g. rights, etc.); to advocate (e.g. free trade, etc.); to support
Common word, Noun 
擁立 ようりつ back; support
Common word, Noun, Suru verb 
擁壁 ようへき retaining wall (civil engineering)
Noun 
擁する ようする to have; to possess
Common word, Suru verb - special class 
擁護者 ようごしゃ advocate; defender; champion; backer
Noun 
擁護論 ようごろん championship; defense (e.g. of a position in debate); apologetics
Noun 

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