What are the similarities of vine and johnsy?

Hi your question lacks the short story which is "The last leaf " by O. Henry

the similarities are :

Explanation:

The last leaf is a short story written by Henry. in this story Henry talks about a Vine tree and Johnsy in the same context. the Vine tree is loosing its leaf which its a symbol of life in a Vine, gradually to the changing of the season to winter, while Johnsy is been sick of a deadly illness known as pneumonia which is also gradually taking his life away from him

The story was short in 1907 in a Greenwich village during a period when there was a breakout in pneumonia due to the harsh weather conditions of winter and how an old artist gave hope of life to a sick woman, by making her clinch her hope on the survival of a vine tree in the open

as for symbolic actions, the narrator's tearing down the wallpaper in an attempt to find the "woman" in the wallpaper represents her struggle to retain or regain her sanity.   the wallpaper has been part of her confinement and by her tearing it down, she is freeing herself from that confinement.