Final answer:
Okonkwo's illness reveals his character's fear, struggle, and tragic nature, while Obierika reacts with concern and empathy.
Step-by-step explanation:
Okonkwo's illness in the novel 'Things Fall Apart' reveals a few key aspects about his character. Firstly, it demonstrates his fear of appearing weak or vulnerable, as he is a proud and strong-willed character. Secondly, his illness shows his struggle to adapt to the changing society and the encroachment of colonialism. Lastly, it highlights the tragic nature of his character, as his illness ultimately leads to his downfall.
On the other hand, Obierika, Okonkwo's close friend, reacts with concern and empathy towards Okonkwo's illness. He understands that Okonkwo's sickness is not only physical but also representative of the challenges and conflicts they face as a community in the face of colonialism.