This is the 1590th most frequent Arabic word.
يريدون
"They want."
The word "يريدون" is used here to indicate the desire or intention of a plural subject (they) to perform an action, in this case, going to school early.
يريدون الذهاب إلى المدرسة مبكرًا.
They want to go to school early.
"يريدون" in this sentence expresses the intention of my friends (plural subject) to assist in the school project.
قال لي أن أصدقائي يريدون مساعدتي في مشروع المدرسة.
He told me that my friends want to help me with the school project.
Here, "يريدون" signifies the preference or decision of a plural subject (they) to undertake the activity of buying books.