The following differences are noticeable between Sakal and Vilas:
(i) Sakal went to school but Vilas didn't go.
(ii) Sakal was physically strong and healthy. There was no need for him to visit the doctor frequently. Vilas was a patient of arthritis. He lacked the means to visit the doctor.
(iii) Sakal acquired a degree in computer programming. He found a job in a private firm while Vilas continued the same work (selling fish) with his mother to support a family.