Most of the time one or the other feels better, but every so often, "which" vs. "what" trips me up. So, what's the exact difference and when should you use one or the other?

CCTV is a type of security camera surveillance system that uses video cameras to transmit a signal to a specific set of monitors. Unlike broadcast television, which sends signals openly, …

What of and what about are not idioms; they don't mean something other than the sum of their parts. To contrast what of with what about is contrasting of and about. Are they perfectly …

The following sentence was on one of the tests: What would you like to do that others have told you is impossible. Students have asked why that could not be replaced with what. I.e., What …

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That usage of "..., what?" at the end of the sentence is an alternative to saying "don't you think?" or "is that not so?", turning a statement in to a slightly rhetorical question as to whether or not …

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Jun 24, 2018 · May I ask what is the difference between the use of 'varying', 'varied', 'various' and 'a variety of'? Many thanks!

Both OLED screens and LED screens are known for their energy efficiency, brightness and vibrant, lifelike colors. So, what is the difference between OLED and LED? We will delve into …