IPA: /ˈpɒlɪtˌbjʊə.rəʊ/
KK: /ˈpɒlɪtˌbjʊə.rəʊ/
A group of top leaders in a Communist party that makes important decisions and policies.
The politburo met to discuss the new economic reforms.
Politburo is a compound word formed from "polit" (derived from the Greek "politikos", meaning of or relating to citizens or the state) and "buro" (from the French "bureau", meaning office or desk). The term refers to the executive committee for a political party, particularly in a communist context, where it functions as the leading body of the party's administration.
Think of 'polit' relating to citizens and 'buro' as an office — together, they describe a governing body that operates like an office for political leadership.
No commonly confused words.