This is the 75th most frequent Chinese word.
美
"美" means "beauty" or "beautiful."
美 is the root word in 美术, meaning 'art', referring to the artistic nature of her aspiration.
她的梦想是成为一名美术家。
Her dream is to become an artist.
美 is used as an adjective meaning 'beautiful', describing the painting.
这幅画非常美。
This painting is very beautiful.
美 adds emphasis to 好 in 美好, enhancing the meaning to 'wonderful', related to both beauty and goodness.