This is the 2434th most frequent Portuguese word.
avançado
Advanced.
In this sentence, 'avançado' is used as an adjective to describe the high level of proficiency in the Portuguese course.
Ele está cursando um nível avançado de português.
He is attending an advanced level Portuguese course.
Here, 'avançada', feminine form of 'avançado', is used as an adjective to characterize the progressive status of the technology.
Este smartphone tem tecnologia muito avançada.
This smartphone has very advanced technology.
In this case, 'avançada', feminine form, acts as an adjective denoting her progressive and forward-thinking nature in her time period.