星 (xīng) is a noun meaning 'star,' referring to celestial bodies visible in the night sky. It is also used in compound words like 星星 (xīngxing, star), 明星 (míngxīng, celebrity), and 星期 (xīngqī, week).
夏天的晚上可以看到很多星星。
xiàtiān de wǎnshàng kěyǐ kàndào hěn duō xīngxīng.
On summer evenings you can see lots of stars.
她从小就梦想成为一名歌星。
tā cóngxiǎo jiù mèngxiǎng chéngwéi yī míng gēxīng.
She has dreamed of becoming a singing star since she was little.
这颗星特别亮,你看到了吗?
zhè kē xīng tèbié liàng, nǐ kàndào le ma?
That star is especially bright; did you see it?