adjective
Definition: Not showing or feeling nervousness, excitement, or agitation; peaceful and quiet.
Example: She remained calm during the storm, reassuring everyone around her.
noun
Definition: A state of peace and quiet, often without any disturbance or noise.
Example: She felt a sense of calm wash over her as she sat by the lake.
transitive verb
Definition: To make someone or something quiet or peaceful.
Example: The teacher tried to calm the students before the test.