Put quotations marks... or colons
Answer: Alliteration
Alliteration refers to the repetition of the same initial consonant sounds within a group of words. Alliteration is commonly used in order to cause an emotional effect or to increase the persuasiveness of a text. Alliteration is also known as "head rhyme." In this case, the alliteration occurs in the words "swivel" and "still," which both have the same initial consonant sound.
Answer:
different
perhaps
purple
apartment
carpet
important
these six words have r-controlled syllables