This is the 3026th most frequent Japanese word.
ペンギン
Penguin.
The word ペンギン ('penguin') is used as the subject of the sentence to indicate the specific animal being discussed.
ペンギンは南極に住んでいます。
Penguins live in Antarctica.
Here, ペンギン ('penguin') is the direct object of the sentence, specifying the animal that was observed.
動物園でペンギンを見ました。
I saw penguins at the zoo.
In this sentence, ペンギン ('penguin') is used in a comparative sense to describe the style of swimming.