Please hand this essay in to professor Nakagawa.
I got 100 percent on the essay exam.
My essays are still full of mistakes.
When you make writing, what are you doing? Simply put, you're writing. If you want to be fancier about it, you could say this is composition.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.