Etymology is the history of the origin of words and phrases.

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Why is it “geometric” but “theoretical”?

I just came across a course name: Geometric and Theoretical Optics. The mismatched endings bug me. Why do we have both -ical and -ic endings? Is there any difference in meaning between, say, ...
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What’s a “handegg”?

What’s a handegg? NOTE: This question is primarily related to the etymology of a compound noun which is not in The Dictionary. There is a hat this year called “Handegg”, given out for a posting that ...
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What is the origin of the phrase “bullet points”?

In particular, was the expression coined by a single individual or is it attributed to a document? The only thing I've been able to find was a non-cited reference to its origins in the 19th century ...