Alliteration - Words with the same consonant sound at the beginning
Example:
One of the best-known pieces of alliteration is:
Peter Piper picked a peck of pickled pepper.
The rats had a litter rate (alliteration) of one every second. We had to call in the Pied Piper!
Other examples of alliteration
A moist young moon hung above the mist of a neighbouring meadow.
– From Conclusive Evidence by Vladimir Nabokov.
So we beat on, boats against the current, borne back ceaselessly into the past. – From The Great Gatsby by F. Scott Fitzgerald