Key
Mood
Mood noun - A state of mind dominated by a particular emotion.
Key and mood are semantically related in atmosphere topic. Sometimes you can use "Key" instead a noun "Mood".
How words are described
Both words in one sentence
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To be clear, the key difference between BPD and bipolar disorder is that mood swings in BPD are always a response to external stimuli (even if it is something as trivial as your pen being out of ink) while mood swings in bipolar disorder are spontaneous.
Source: Mood-Swinger -
One of the key symptoms of Borderline Personality Disorder are rapid mood swings that can happen within hours.
Source: Mood-Swinger -
Mood Dissonance: Watch Keiko smile as she sings minor-key songs with lyrics full of angst.
Source: Music / Kalafina
Cite this Source
Mood and Key. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/key/mood
Key & Mood. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/key/mood>.
Mood or Key. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/key/mood.
Google Ngram Viewer shows how "key" and "mood" have occurred on timeline