This is the 4073rd most frequent Dutch word.
alexa
"Alexa" is not a Dutch word; it is a proper noun, typically a name or refers to Amazon's virtual assistant.
Here 'Alexa' is used as a proper noun, referring to a digital assistant by name, directed in a direct command.
Alexa, kun je het licht aanzetten?
Alexa, can you turn on the light?
In this context, 'Alexa' is used as a proper noun and refers to a person's name in a declarative statement.
Mijn vriendin Alexa heeft een nieuwe baan.
My friend Alexa has a new job.
Again, 'Alexa' is a proper noun, referring to a digital assistant and discussed in an informal expression of habitual action.