Up On vs Upon

Up On = location that is elevated (e.g. Up on the mountain, there is plenty of fresh air.)

Upon = a formal and antiquated version of  the word ‘on’, and sometimes “used to show that something happens soon after, and often because of, something else.”* (e.g. Upon seeing her test grade, she contacted the teacher to see if there had been a mistake.)
When used between two nouns that are the same, ‘upon’ indicates the large number or amount of the thing that has been mentioned.** (e.g. She saw miles upon miles of yellow canola fields as she looked out of the car window.)

*Cambridge dictionary, http://www.dictionary.cambridge.org/dictionary/english/upon, Accessed September 2, 2019.
**One Stop English, http://www.onestopenglish.com, Accessed September 2, 2019.

Image of Little Red Riding Hood
Little Red Riding Hood Source: Clker Clipart

Wikipedia explanation of “Once upon a time…”

Published by McSpellCheck

I have a Bachelor of Science from the University of Manitoba, and have experience with proofreading, creating reports and editing.

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