This is the 9340th most frequent Spanish word.
aeromodelismo
The hobby or activity of building and flying model airplanes.
In this sentence, 'aeromodelismo' is used as the subject of the sentence, expressing the idea of the hobby as a general concept.
El aeromodelismo es un pasatiempo muy divertido y educativo.
Aeromodelling is a very fun and educational hobby.
Here, 'aeromodelismo' functions as a noun indicating the activity or discipline that is being practiced.
Mi hermano practica aeromodelismo cada fin de semana en el parque.
My brother practices aeromodelling every weekend at the park.
In this context, 'aeromodelismo' refers to the field or domain surrounding the competition or event.