Mood
The emotional atmosphere a text creates for the reader.
Mood is the feeling a passage evokes, such as dread, nostalgia, calm, or tension. Writers build it through setting, imagery, sound, and rhythm, immersing readers in a particular emotional climate. While tone reflects the author’s attitude, mood is what the reader is made to feel.
Example
The dark room, the single ray of light, and the imagined heartbeat build a claustrophobic, panicked mood that mirrors the narrator’s unraveling mind.
The Tell-Tale Heart · Edgar Allan Poe