Key
Key noun - An explanatory list of the symbols on a map or chart.
Progression and key are semantically related in range topic. In some cases you can use "Progression" instead a noun "Key", when it comes to topics like gradation.
Progression
Progression noun - A series of things linked together.
Key and progression are semantically related in range topic. Sometimes you can use "Key" instead a noun "Progression", if it concerns topics such as gradation.
How words are described
Both words in one sentence
- This progression is used in ways similar to the use of the first four chords of the Circle of Fifths in a minor key (i iv VII III).
Source: Humoresque Progression -
The progression is usually in a major key, and usually runs as follows: I V vi iii IV I IV V (repeat).
Source: Pachelbel's Canon Progression - The original progression is in a minor key, and runs as follows: i VI VII III.
Source: Humoresque Progression
Cite this Source
Progression and Key. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/key/progression
Key & Progression. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/key/progression>.
Progression or Key. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/key/progression.
Google Ngram Viewer shows how "key" and "progression" have occurred on timeline