This is the 4063rd most frequent Japanese word.
ピカチュウ
"Pikachu" – A popular Pokémon character known for its yellow color and electric powers.
Here, ピカチュウ is used as the subject of the sentence, referring to the name of the Pokémon.
ピカチュウは私のお気に入りのポケモンです。
Pikachu is my favorite Pokémon.
In this sentence, ピカチュウ is used to describe the type of plush toy, specifying it as a Pikachu-themed item.
ピカチュウのぬいぐるみを買いました。
I bought a Pikachu plush toy.
Here, ピカチュウ represents the character Pikachu that appeared in the speaker's dream.