| Word | Definitions | Synonyms |
|---|---|---|
| theory | (noun) a well-substantiated explanation of some aspect of the natural world; an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena | - |
| (noun) a tentative insight into the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena | Synonyms: hypothesis, possibility | |
| (noun) a belief that can guide behavior | - |