寡头 /guǎtóu/ angolul

oligarch [oligarchs]▼(a member of an oligarchy)
noun
[UK: ˈɒ.lɪ.ɡɑːk] [US: ˈolɪ.ˌɡɑːrk]

oligarchy [oligarchies]▼(those who make up an oligarchic government)
noun
[UK: ˈɒ.lɪ.ɡɑːk.i] [US: ˈɑː.lə.ˌɡɑːrk.i]