This is the 481st most frequent Polish word.
rozpoczął
"Rozpoczął" means "he began" or "he started."
Here, the word 'rozpoczął' means 'started' and is used in the context of beginning a new activity or task.
Jan rozpoczął nowy projekt w pracy.
Jan started a new project at work.
Here, 'rozpoczął' denotes the beginning of a new social interaction, specifically initiating a conversation.
Kiedy rozpoczął rozmowę, wszyscy zamilkli.
When he started the conversation, everyone fell silent.
In this sentence, 'rozpoczął' signifies the initiation of the process of learning something new.