This is the 584th most frequent Ukrainian word.
порошенко
"Порошенко" is a Ukrainian surname, most commonly associated with Petro Poroshenko, a former President of Ukraine.
Here, 'Порошенка' is used as a direct object referring to the individual in a discussion context.
Группа студентів провела дебати про політику та згадала Порошенка.
A group of students held a debate about politics and mentioned Poroshenko.
In this case, 'Порошенка' functions as the subject of the discussion regarding their actions.
У новинах часто говорять про політичні дії Порошенка.
In the news, they often talk about Poroshenko's political actions.
In this sentence, 'Порошенко' is a proper noun, the surname of a specific individual.