This is the 4134th most frequent Portuguese word.
rita
"Rita" is a Portuguese female given name, equivalent to "Rita" in English.
In this sentence, 'Rita' is used as a proper noun, representing a person's name.
Rita é uma ótima professora.
Rita is a great teacher.
Here, 'rita' refers to the conjugated form of the verb 'rir' in Brazilian Portuguese, used informally.
Ele sempre rita das minhas piadas.
He always laughs at my jokes.
In this example, 'Rita' is again used as a proper noun, the name of an individual.