Hello. You did not say what scenes the question refers to, which makes it impossible for me to give you a specific answer about those scenes. However, I will try to help you in the best possible way by presenting you with similarities and general differences between these two characters.
Unoka and Okonkwo are father and son, respectively, which normalizes that there are similarities between them, but does not prevent that there are differences either. Among the similarities we can say that both gave up their own life in different ways, but even so they did not explore what they had to live, both also had a strong attraction to music, in addition, both were unworthy of receiving titles.
However, the differences between them are more prominent than the similarities, while Unoka is a lazy person, who has difficulty following his dreams and ends up having a failed, unworthy and shameful life, where he became a poor and drunk with no reputation; Okonkwo is a strong warrior, someone who fights to conquer what he has and manages to be a man, rich, honorable and with possessions that are the result of his hard work.