essay, composition
В сочинении Тома много ошибок.
Tom's composition has many mistakes.
У Тома в сочинении много ошибок.
Tom's essay has a lot of mistakes.
Я не сильна в сочинении песен.
I'm not good at writing songs.
В её сочинении не было ошибок.
There were no mistakes in her essay.
Я не силён в сочинении песен.
I'm not very good at writing songs.