I'm assuming that you are referring in this question to Rabindranath Tagore.
Both Tagore and Gandhi struggled to free India from British rule during the first half of the 20th Century. The two were good friends and collaborators in this cause.
However, they did have differences in their approaches to reisistance. Gandhi, of course, believed in passive resistance to unjust laws. He believed that by opposing the laws, he and his followers would be able to show the British how unjust the laws were.
Tagore did not place as much confidence in passive resistance. He thought that it was not necessarily a moral way to fight oppression. He thought that it was like any other kind of force in that it could make the people who used it power-hungry. Finally, he worried that Gandhi was oversimplifying the issues that faced India and that this oversimplification would lead to problems in the future.
For his part, Tagore was more of a philosophical leader than Gandhi, who was more into practical action. He talked more about how to be moral and philosophically correct than about how to go about getting India out from under British control.
Rabindranath Tagore (1861-1941) was a great person with multiple achievement to his credit including being great poet, musician, writer of stories and novels. In addition he was a painter and a craftsman. He was also a social reformer, and set up a university. No doubt he was also a nationalist, and from time to time expressed his support for cause of India and Indians. But he is not recognized for any significant contribution to India's fight for independence from British Rule.
Mohandas Karamchand Gandhi (1869-1948), popularly called Mahatma Gandhi, was very different from Tagore both in terms of his personality and his approach towards British Rule in India. From 1915 to India's independence from British rule in 1947, he struggled relentlessly against the British rule in India. The approach adopted by Mahatma Gandhi was that of non-violence and peaceful resistance. It was believed by many that Britishers will not respond to such approach. They said that British will bow only to force. However the approach of Gandhi showed a way to Indians oppressed and maltreated by Britishers to regain their self respect and dignity through passive resistance. This united Indians behind Mahatma Gandhi, and gave them a renewed will to fight for their rights. They became more defiant and more courageous. These changes in people, ultimately created a force, which Britishers could not resist, and they decided to leave India.
He believed in actual action based on philosophy while Gandhi believed in non-violent resistance.