Assumption
Assumption noun - Something taken as being true or factual and used as a starting point for a course of action or reasoning.
Usage example: your argument is faulty because it's based on erroneous assumptions
Ground and assumption are semantically related. In some cases you can use "Ground" instead a noun "Assumption".
Ground
Ground noun - An immaterial thing upon which something else rests.
Usage example: opposed to the notion that religious law should be used as a ground for civil law
Assumption and ground are semantically related. Sometimes you can use "Assumption" instead a noun "Ground".
How words are described
Both words in one sentence
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Underground elves are rather unusual in fiction... perhaps the assumption that Our Elves Are Better means they don't live in holes in the ground anymore.
Source: Elaborate Underground Base - The two had chosen to meet at a church, in the assumption that it would be truce ground and there could be no outbreak of violence, but nonetheless things got violent between them and Robert stabbed Comyn.
Source: Make Sure He's Dead - True to the popular assumption, "Grant" was the accepted answer; when a contestant gave the true answer, Groucho Marx was shocked that he managed to get the question "wrong", forcing him to point out the "above-ground sarcophagi" technicality.
Source: Loophole Abuse / Puzzles
Cite this Source
Ground and Assumption. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/assumption/ground
Assumption & Ground. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/assumption/ground>.
Ground or Assumption. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/assumption/ground.
Google Ngram Viewer shows how "assumption" and "ground" have occurred on timeline