Key
Key noun - An explanatory list of the symbols on a map or chart.
Main thing and key are semantically related in principal topic. In some cases you can use "Main thing" instead a noun "Key".
Main thing
Key and main thing are semantically related in principal topic. Sometimes you can use "Key" instead a noun phrase "Main thing".
Cite this Source
Main thing and Key. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/key/main_thing
Key & Main thing. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/key/main_thing>.
Main thing or Key. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/key/main_thing.
Google Ngram Viewer shows how "key" and "main thing" have occurred on timeline