This is the 8822nd most frequent Russian word.
порошенко
"Порошенко" is a proper noun, referring to Petro Poroshenko, a Ukrainian businessman and politician who served as the President of Ukraine from 2014 to 2019.
The word 'Порошенко' in this sentence serves as a proper noun indicating the personal name of an individual who held a specific political office.
Порошенко был пятым президентом Украины.
Poroshenko was the fifth President of Ukraine.
Here, 'Порошенко' again functions as a proper noun, used to refer to the individual whose actions are influencing public discourse.
Действия Порошенко вызвали бурное обсуждение в обществе.
Poroshenko's actions provoked intense discussion in society.
In this context, 'Порошенко' is used as the subject who is associated with advocating particular policies.