The main theme could be isolation. In many lighthouse - related stories, the lighthouse keepers are often isolated from the mainland and society. They face solitude and have to deal with their own thoughts and emotions in that confined space.
Well, it might be about the connection to nature. In 'the lighthouse keeper short story', the keeper is constantly surrounded by the sea and the elements. His life is intertwined with the natural world around him, so it could be a theme about man's relationship with nature. He has to endure the storms, enjoy the calm seas, and rely on nature's patterns for his daily life.
There could be the lighthouse keeper. He is the most likely main character as he is the one who lives in the lighthouse and has a direct connection to the place. His experiences and actions would likely drive the story.
There might be some passing sailors that could be considered important characters too. They are the ones the lighthouse keeper is guiding, so they play a role in the story even if they don't have a large amount of on - page time. Their presence is what gives the keeper his purpose.
As I'm not aware of the '1408 short story', it's difficult to determine the main theme. It could potentially be about isolation if it's set in a single location like room 1408. Maybe it's about the psychological state of a character who is in that particular place. But without more information, it's all speculation.
One common theme is isolation. Lighthouse keepers are often alone in a remote location. Another theme is safety, as the lighthouse guides ships at sea. Also, mystery can be a theme, like the secrets that might be hidden in an old lighthouse.
The main element is the ghost of the lighthouse keeper's daughter. Her presence is often felt and seen.
The main plot is about a little red lighthouse that stands bravely. It has its own place and purpose, and it goes through various events that show its significance in the area it is located in.
One main element could be the orcas themselves. Their presence near the lighthouse is central. Another might be the lighthouse as a geographical and symbolic feature in the story.
I think the theme of self - discovery is prominent. By living in solitude near Walden Pond, the protagonist in the story explores his inner self, away from the distractions of society. He learns about his own needs, desires, and the true nature of human existence. For example, he realizes that he doesn't need a lot of material possessions to be happy.
The main theme could be about love and dependence. In the story, the 'darling' character often depends on the men in her life, showing how her identity is somewhat tied to her relationships.