This is the 2546th most frequent Spanish word.
caminando
Walking.
The word 'caminando' is used as a present participle to indicate an ongoing action occurring at the moment of speaking.
Estoy caminando al trabajo.
I am walking to work.
Here, 'caminando' functions as a present participle to provide detail about what Juan was doing when observed.
Vi a Juan caminando en el parque.
I saw Juan walking in the park.
In this example, 'caminando' is used as a gerund to describe an action happening concurrently with another event.