This is the 2844th most frequent Arabic word.
كتب
"كتب" means "wrote" or "has written."
Here, "كتب" is used as a simple past verb meaning "wrote."
كتب الطفل رسالة إلى صديقه.
The child wrote a letter to his friend.
In this sentence, "كتب" is used as a plural noun meaning "books."
أحب قراءة كتب التاريخ.
I love reading history books.
Here, "تكتب" is used as a present verb meaning "you write" in the subjunctive mood due to the prefix "أن."