bulbul (בולבול) is a type of bird. It's also slang for "scatterbrain".
In chidlren's slang, it's also a word for "penis", equivalent to the English word peepee.
kus is offensive and roughly equal to the c word. nartik is the word that kids would be taught to use in proper speech. There is no children's female equivalent to bulbul.
Sydney is not a Hebrew word. It has no meaning in Hebrew.
diestra has no meaning in Hebrew. This is not a Hebrew word.
the word "jae" is not a Hebrew word.
neelach is not a Hebrew word.
adera is not a Hebrew word.
"Ricca" is not a Hebrew word.
"Jay" is not a Hebrew word.
riuw is not a Hebrew word.
"peckel" is not a Hebrew word
Yaqui is not a Hebrew word.
Lully is not a Hebrew word.