You answered your question in your question. The answer is Sure and Sugar.
surely
No English words start with the letters "jy."
There are no English words that start with zd.
jalapeno
No
Two examples The Thought
Decode
Thousands.
Yes, "Sounds spectacular" is an example of alliteration because the words start with the same sound "s".
There are none in English.
xylophone
Joleen Hughes has written: 'Sounds!' -- subject(s): English language, Juvenile literature, Onomatopoeic words, Vocabulary, Words for Sounds
Thousands of English words start with the letter b. Less than ten English words end with the letter j. No Scrabble words start with b and end with j.