Key and Notion

Key

Key noun - An explanatory list of the symbols on a map or chart.

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Notion and key are semantically related. In some cases you can use "Notion" instead a noun "Key".

Nearby Words: keyed, keyboard, keying

Notion noun - A sudden impulsive and apparently unmotivated idea or action.

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Key and notion are semantically related. Sometimes you can use "Key" instead a noun "Notion".

Nearby Words: noted, notional, noting

old	old key	old notion
similar	similar key	similar notion
public	public key	public notion
simple	simple key	simple notion
Other adjectives: actual, unique, strange.

A Cracked article compares this notion to becoming a better writer by using every key on your keyboard in every sentence.

Source: 90% of Your Brain
Best Years of Your Life: One of the key things about the show is how it deliberately subverts the recently popularized notion that early-mid 20's are this.

Source: Series / Girls
The main reason for such dresses (and perhaps the key to this trope over any other wedding dress) is the notion that many women like to "feel like a Princess" on their wedding (even if she is already royalty), and wearing such a dress is at least one way to carry out that wish.

Source: Fairytale Wedding Dress

Cite this Source

Notion and Key. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/key/notion

Key & Notion. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/key/notion>.

Notion or Key. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/key/notion.

Google Ngram Viewer shows how "key" and "notion" have occurred on timeline