This is the 2888th most frequent Spanish word.
secundario
Secondary; not primary or main.
Here, 'secundaria' describes the relative importance of one concept compared to another, indicating that health is less important than happiness.
Mi salud es secundaria en comparación con mi felicidad.
My health is secondary compared to my happiness.
In this context, 'secundaria' refers to the stage of education after primary school, commonly called middle or high school.
Estoy acabando mi educación secundaria en este momento.
I am finishing my secondary education at the moment.
Here, 'secundario' is describing a character that is not the primary focus or protagonist, akin to a supporting role.