This is the 11391st most frequent Catalan word.
unicorn
A mythical creature resembling a horse with a single horn on its forehead.
Here, 'unicorns' is used in a general descriptive manner to refer to mythological beings as a plural common noun.
Els unicorns són criatures màgiques segons les llegendes.
Unicorns are magical creatures according to legends.
In this sentence, 'unicorn' refers to a specific tangible object, a toy designed in the shape of the said mythical creature.
Li vaig regalar un unicorn de peluix al meu nebot.
I gave a plush unicorn to my nephew.
'Unicorn' functions metaphorically here, symbolizing something uniquely rare or extraordinary.