This is the 13547th most frequent Spanish word.
remplazar
To replace.
In this sentence, 'remplazar' is used to indicate substituting something with another due to preference or better utility.
Voy a remplazar la lámpara vieja por una nueva.
I am going to replace the old lamp with a new one.
Here, 'remplazar' refers to changing components because they are no longer operational.
Tenemos que remplazar las baterías del control remoto, ya no funcionan.
We need to replace the batteries in the remote control; they no longer work.
In this usage, 'remplazar' means to substitute one event or plan with another for variety or appropriateness.