This is the 9447th most frequent Spanish word.
almohada
A pillow used for sleeping.
Here, 'almohada' directly refers to the object used to support the head while sleeping: a pillow. It's serving as the subject of the sentence.
Dormí cómodamente gracias a mi almohada nueva.
I slept comfortably thanks to my new pillow.
In this sentence, 'almohadas' is used in the plural form and refers to the product being sold in the store.
La tienda tiene una promoción especial en almohadas esta semana.
The store has a special promotion on pillows this week.
Here, 'almohada' is being described as having a decorative form, showcasing its aesthetic use besides its practical function.