Theory
Theory noun - An idea that is the starting point for making a case or conducting an investigation.
Usage example: set out to prove her theory that people can't really taste any difference between colas, so they buy according to the product's image
Theorem is a synonym for theory in assumption topic. In some cases you can use "Theorem" instead a noun "Theory", when it comes to topics like hypothesis.
Theorem
Theorem noun - An idea accepted as a demonstrable truth.
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Synonyms for Theorem
Theory is a synonym for theorem in assumption topic. You can use "Theory" instead a noun "Theorem", if it concerns topics such as explanation based on hypothesis and experiments.
Nearby Words: theoretic, theoretically
Mutual synonyms
Related pairs
How words are described
| particular | particular theory | particular theorem |
| complex | complex theory | complex theorem |
| real | real theory | real theorem |
| little | little theory | little theorem |
| Other adjectives: new, basic, last, scientific. | ||
Cite this Source
Theorem and Theory. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/theory/theorem
Theory & Theorem. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/theory/theorem>.
Theorem or Theory. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/theory/theorem.
Google Ngram Viewer shows how "theory" and "theorem" have occurred on timeline