I think both realism and naturalism have the meanings of human desires and human needs. Since human’s desires are always endless and people always want more to fulfill themselves spiritually, people make selfish decision cause the cruel reality. And we are facing realism and naturalism everyday.
In “A Simple Heart”, the maid Felicite was the example of realism, because she was given up by her lover because of her low social status. Also, the story “Separate Way” is another example of realism. Okyo left her friend Kichizo for a better life since she said she had no choice and that was her only way to life better. Kichizo was hopeless after he was abandoned again and again. It was so realistic that no one cared about his feeling because Okyo’s desires was above Kichizo and she had to think of herself first.
The drama “Hedda Gabler” is a naturalism reflection. Since every characters’s behaviors were affected by their social status. For instance, Hedda’s characteristic was so uninhibited that she cheated on her husband and forced Lovborg to die because she grew up in a high class family and she was spoiled.
In my opinion and as my understanding, realism is devised by “someone make an decision for obtaining something they want”; and naturalism is ” someone has an act because of a reason of natural”. Both ideals come from society.