>>7837457no no, Oxente is actually an expression, it means something like "ouch" and its application depends of the way it is pronunciated, but thx to your question anon, i will try to explain the subject.
The brazilian portuguese have a lot of tupi and guarani words (the two major native ethnicies) and also mixes with words from africans (that came as slaves) and even european countries like spain, france and netherlands who disputed the territory. But brazil is a massive country what never deverloped an unique culture or sence of nation, some expressions and words are so different that sounds like another type of portuguese, if you put a brazilian from an upstate like roraima and another from paraná they will hardly understand each other, despite the fact both speak portuguese.
About my region, the northwest, we have our own culture and way to comunicate, but its also differs state to state and contry-side to urban areas, an exemple is the word "bola-de-gude" (marble ball) in Recife and nearby cities its know as "bola de gude" but if you go to the countryside they will call it "Ximbra" whats a world directelçy derived from the Tupi similar marble ball game, the capital and larger cities receieved more influence from the colonizers and foreigners, this is not the case of rural areas, even the culture differs slighty.
Brazilian history was build in a southeast-centric way, forming large cultural differences among the regions, even today all the major media broadcasts are in the southeast (Globo, SBT, record tv, JV, etc) they bought and sell southeastern culture (nostly rio and são paulo) as the brazilian culture and they still want the rest of us to copy they culture as "the real brazilian one", even Vargas, a former brazilian dictator tried to south-wash the country using media, this still showing results today as sotheastern media mock on other regions dialects and claim they have no accent.
