This is the 7185th most frequent Polish word.
jakub
"Jakub" is the Polish form of the name "Jacob."
Jakub refers to a proper noun, a name for an individual.
Jakub jest moim najlepszym przyjacielem.
Jakub is my best friend.
'Jak' implies 'how', and 'ubierać się' means 'to dress'.
Nie wiemy, jak ubrać się na przyjęcie.
We don't know how to dress for the party.
'Jako' means 'as'. This demonstrates the potential phonetic similarity but is unrelated to 'Jakub'.