Learn Spanish (Spain): El año tiene cuatro estaciones.

Yes! The word estación can mean a train or bus station, but it is also the word for a season of the year. You can tell which one it is based on the context. Since a year does not have train stations, it must mean 'seasons' here!

Why does estaciones end in -es instead of just adding an -s?

In Spanish, if a noun ends in a vowel, you just add -s to make it plural (like año to años). But if a noun ends in a consonant, like the -n in estación, you have to add -es to make it plural. Notice that the written accent mark on the o in estación also disappears in the plural form, estaciones.

How important is the squiggly line over the n in año?

Extremely important! That line is called a tilde, and it makes the ñ an entirely different letter in the Spanish alphabet with a distinct sound. If you leave it off and write ano, you are writing the anatomical word for anus. Always remember the tilde when writing about years!

Is the word estaciones masculine or feminine?