This is the 325th most frequent Portuguese word.
luiz
"Luiz" is a Portuguese male given name, equivalent to "Luis" or "Louis" in English.
'Luiz' refers to a male given name used as an example of a proper noun.
Luiz é um nome comum no Brasil.
Luiz is a common name in Brazil.
'luz' (light) in Portuguese is spelled differently and has a different meaning, showing the importance of context and spelling.
O filme tem uma luz única na fotografia.
The movie has a unique light in its cinematography.
Here, 'Luiz' again is used as a proper noun referring to a specific individual.