This is the 500th most frequent Japanese word.
ちゃん
A Japanese honorific suffix expressing endearment, familiarity, or affection, often used for children, close friends, or loved ones.
Here, 'ちゃん' is used as a term of endearment to show affection towards the cat.
ねこちゃんはかわいいね。
The cat (chan) is cute.
In this sentence, 'ちゃん' is a diminutive suffix used for Hanako, often used with young children or someone close.
花子ちゃん、宿題は終わった？
Hanako (chan), have you finished your homework?
Here, 'ちゃん' attaches to an inanimate object, giving it a sense of affection and personification.