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OSCILLATION

1. [n] a single complete execution of a periodically repeated phenomenon; "a year constitutes a cycle of the seasons"

2. [n] (physics) a regular periodic variation in value about a mean

3. [n] the process of oscillating between states

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Suzanne Grumko in USA

"Duty vs. Responsibility I have a problem with the distinction of the nouns duty and responsibility. My 12 year old son is being taught in 7th grade Civics that duty is something you MUST do and responsibility is something you SHOULD do. I have consulted several dictionaries and thesauri, none of which appear to support the above definitions. I am an English woman living in the U.S. and there are so many conflicts between the two countries usage of the English language that I am often confused. If you could clarify this matter I would be eternally in your debt."

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