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Students, parents, and teachers took part in the festivities on the school's fiftieth anniversary.

Students, parents, and teachers took part in the activities of the school's fiftieth anniversary.

Students, parents, and teachers took part in the school's fiftieth anniversary.

Are all of the above versions all right and identical in meaning? Thanks.
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You have got to get the idea out of your head that different words and phraseologies are 'identical' in meaning-- there are always differences, though they may be unimportant or difficult to define.

Festivities are necessarily festive.
Activities can include boring things like PTA meetings
The third sentence might indicate nothing more than an assembly with a student bagpipe solo.
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Mister MicawberYou have got to get the idea out of your head that different words and phraseologies are 'identical' in meaning-- there are always differences, though they may be unimportant or difficult to define.

Festivities are necessarily festive.
Activities can include boring things like PTA meetings
The third sentence might indicate nothing more than an assembly with a student bagpipe solo.

Thanks, Mister.

In truth, I'm more eager to know the slight differences among those words or phrases so that I can grasp their meaning better.

By the way, I still don't get the line highlighted in blue. Why is it only that?
Where did I say 'only'? That is just an example.
Mister MicawberWhere did I say 'only'? That is just an example.

Thanks, Mister.
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