Cornerstone
Cornerstone noun - An immaterial thing upon which something else rests.
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Synonyms for Cornerstone
Idea and cornerstone are semantically related. In some cases you can use "Idea" instead a noun "Cornerstone".
Idea
Idea noun - Something imagined or pictured in the mind.
Cornerstone and idea are semantically related. Sometimes you can use "Cornerstone" instead a noun "Idea".
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Idea and Cornerstone. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/cornerstone/idea
Cornerstone & Idea. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/cornerstone/idea>.
Idea or Cornerstone. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/cornerstone/idea.
Google Ngram Viewer shows how "cornerstone" and "idea" have occurred on timeline