This is the 923rd most frequent Arabic word.
أكبر
"أكبر" means "greater" or "biggest."
Here, "أكبر" is used to indicate that one has more age or is older.
هو أكبر مني بعشر سنوات.
He is ten years older than me.
Here, "أكبر" signifies the most significant or severe challenge faced.
كان أكبر تحدٍ لي هو اجتياز الامتحان النهائي.
The biggest challenge for me was passing the final exam.
In this case, "أكبر" is used to describe the largest in size or magnitude compared to others.