Key
Key noun - An explanatory list of the symbols on a map or chart.
Trace
Trace noun - A mark or series of marks left on a surface by something that has passed along it.
How words are described
Both words in one sentence
- At one of its key moments the Ottomans were, in 1453, able to take Constantinople which was the last trace of The Roman Empire.
Source: Useful Notes / Turks with Troops - He claims that the key to their strong friendship is due to having removed any possible trace of sexual tension by hooking up during basic training.
Source: Series / Bluestone 42
Cite this Source
Trace and Key. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/key/trace
Key & Trace. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/key/trace>.
Trace or Key. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/key/trace.
Google Ngram Viewer shows how "key" and "trace" have occurred on timeline