Cero
The name of the number 0 [zero/nought] is spelled cero in Spanish. The numeral 0 is also written 0 in Spanish.
The Spanish word for "zero" is "cero". It is pronounced "SARE-oh". Please see this site for confirmation: http://www.answers.com/library/Translations
The spanish word for guitar is Guitarra. This English word came directly from the Spanish word, but it is not a Spanish word any more than the Spanish word is an Arabic word. "qutar" or a Greek word Chirara.
aqwua el caro (sounds like aqua l car-0)
The spanish word for did is hizo.
"De" is the Spanish word for "of".
The Spanish word for "she" is "ella".
The Spanish word for "in" is "en".
"Con" is the spanish word for "with".
The Spanish word for "who" is "quién".
According to the Royal Spanish Academy, there is no such word in spanish.