vs
QUICK ANSWER
"Noisy" is an adjective which is often translated as "ruidoso", and "expensive" is an adjective which is often translated as "caro". Learn more about the difference between "noisy" and "expensive" below.
noisy()
An adjective is a word that describes a noun (e.g., the big dog).
1. (loud)
a. ruidoso
The construction site is noisy first thing in the morning.La obra es ruidosa a primera hora de la mañana.
b. bullicioso
There was a very noisy group of children sitting next to us.Teníamos a un grupo muy bullicioso de niños sentado a nuestro lado.