This is the 8744th most frequent Portuguese word.
alérgicas
"Alérgicas" means "allergic" in English.
The word 'alérgicas' is being used as a plural feminine adjective describing Ana and Joana, indicating they have an allergic reaction.
Ana e Joana são alérgicas a pólen.
Ana and Joana are allergic to pollen.
The word 'alérgicas' here metaphorically describes plants that are sensitive to pollutants, serving as a figurative use.
As plantas alérgicas têm dificuldade de prosperar em áreas poluídas.
Allergic plants struggle to thrive in polluted areas.
The word 'alérgicos' is an adjective modifying the plural masculine noun 'sintomas', referring to symptoms caused by allergies.