Cool MateHypothesis vs Theories
When to use each in English, with meaning, register, and examples.
Hypothesis
FormalTop 3,000 (common)B2noun
Theories
Top 1,000 (very common)
Most formal: HypothesisMost common: Theories
| Hypothesis | Theories | |
|---|---|---|
| Pronunciation | 🇬🇧 /["/haɪˈpɒθəsɪs/","/haɪˈpɒθəsiːz/"]/🇺🇸 /["/haɪˈpɑːθəsɪs/","/haɪˈpɑːθəsiːz/"]/ | 🇬🇧 //ˈθɪəriz//🇺🇸 //ˈθiːəriz// |
| Meaning | An idea or guess that can be tested. | Ideas based on reasoning and evidence. |
| Example | The hypothesis proposed by the scientists was groundbreaking in its implications. | Theories in physics explain the behavior of the universe. |
| Register | Formal | Neutral |
| How common | Top 3,000 (common) | Top 1,000 (very common) |
| CEFR level | B2 | - |
| Part of speech | noun | |
| Collocations | plausible, bold, speculative, construct, develop, form, concern something, be based on something, predict something, on a/the hypothesis, hypothesis about, hypothesis concerning | scientific theories, theories of evolution, theories about culture |
| Antonyms | fact, certainty, truth | fact, reality |
| Common mistakes | Confused with 'theory' - a hypothesis is not proven yet., Sometimes used as a verb, but it's only a noun., Plural is often mistakenly written as 'hypothesises' instead of 'hypotheses'. | Confused with 'hypothesis' - theories are more developed than hypotheses., Using 'theory' instead of 'theories' when discussing multiple concepts., Assuming theories are unchangeable; they can evolve with new evidence. |
| Usage notes | Used mainly in academic and scientific contexts. Avoid using it in everyday conversation as it's too technical for casual discussions. | Typically used in academic or scientific contexts. Avoid casual conversation unless discussing opinion or speculation. |
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Frequently asked questions: Hypothesis vs Theories
What's the difference between Hypothesis and Theories?
Hypothesis: An idea or guess that can be tested. Theories: Ideas based on reasoning and evidence.
Which is more formal: Hypothesis and Theories?
Hypothesis is the most formal of these.
Which is more common: Hypothesis and Theories?
Theories is the most common in everyday English.
Can you show an example of each?
Hypothesis: The hypothesis proposed by the scientists was groundbreaking in its implications. Theories: Theories in physics explain the behavior of the universe.
Can I use Hypothesis and Theories interchangeably?
Not always. Hypothesis and Theories are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.