While both "prove" and "demonstrate" show evidence, there's a subtle difference. "Prove" means to show something is definitely true, often with solid facts or evidence that leaves no room for doubt. "Demonstrate," on the other hand, means to clearly show how something works or is done, often through an example or a visual display; it can also mean to show something is true, but the evidence might not be as conclusive as with "prove." Think of "prove" as establishing something beyond question and "demonstrate" as illustrating or showcasing something.

Here are some example sentences to illustrate the difference:

• Prove:

  • "The scientist proved his theory with compelling data." (Meaning: The scientist provided undeniable evidence to support his theory.)
  • "He proved his innocence in court." (Meaning: He presented enough evidence to show he was not guilty.)

• Demonstrate:

  • "The teacher demonstrated how to solve the equation." (Meaning: The teacher showed the students the steps to solve the equation.)
  • "The athlete demonstrated amazing skill and strength." (Meaning: The athlete showed off his extraordinary capabilities.)
  • "The experiment demonstrated the effects of gravity." (Meaning: The experiment illustrated the impact of gravity, but perhaps not with absolute, undeniable proof.)

Sometimes, the words can be used interchangeably, but understanding their nuances will help you use them more precisely. For example, you could "demonstrate" a mathematical theorem, showing a clear path to its truth, even if it might not be as airtight a "proof."

Happy learning!