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Boring: sleep

• Sleeping Beauty slept in her forest castle.

Use: slumber Sleeping beauty slumbered in her forest castle.

In context slumber in a song: slumber in 3 articles: here, here, and here

Frequency Google and COCA: Ngram (click on the picture to enlarge):

Notes The word slumber is mainly used in literary contexts. Slumber is more often used as a noun than a verb. Note that, unlike COCA, both google search results and Ngram do not differentiate between the two word classes.