YOU SAID:

Penguins are better than kiwi birds.

INTO JAPANESE

ペンギンは、キウイ鳥より優れています。

BACK INTO ENGLISH

Penguin is better than a Kiwi bird.

INTO JAPANESE

ペンギンはキウイ鳥よりよいです。

BACK INTO ENGLISH

Penguin is better than a Kiwi bird.