Onomatopoeia
It sounds like you may be talking about sloth.
No, "surround" is not a homophone. A homophone is a word that sounds the same as another word but is spelled differently and has a different meaning. "Surround" does not meet this definition as there is no other word that sounds exactly like it.
Sounds like a definition of the word "CRIME" to me.
The consecutive repetition of vowel sounds.
this word sounds like comer " comer'
buzz sounds like was
The only word I can think of that sounds at all like this is 'lasagna' (a type of pasta). If that is not what you mean, please give the definition of the word you want to have spelled.
alliteration
One word that can describe the sound of unhappiness is "gloomy."
Shard. A splinter of broken pottery (it has other meanings, but that's the most common).
To make sounds and facial movements of lively amusement
The word sounds like "glosory" but is spelled "glossary". It means an alphabetical list of words with a definition of each word, and can often found at the end of a book or article.