This is the 3695th most frequent Japanese word.
うま
"うま" means "horse" or "delicious" depending on context.
In this sentence, 'うま' is used to refer to the animal 'horse'.
この牧場にはたくさんのうまがいます。
There are many horses on this farm.
Here, 'うまい' is used to describe someone's skill or ability in singing.
彼の歌は本当にうまいですね。
His singing is really skillful, isn't it?
In this case, 'うまい' is used to express that the dish is delicious or tasty.