This is the 457th most frequent Hebrew word.
בניו
"His sons" or "his children."
In this sentence, 'בניו' means 'his sons,' with the possessive suffix 'יו' indicating 'his.'
אביו גאה בכל אחד מבניו.
His father is proud of each of his sons.
Here, 'בניו' again refers to 'his sons,' emphasizing their role as potential helpers or supporters.
עליו לזכור להיעזר בבניו בעת הצורך.
He must remember to rely on his sons when needed.
In this context, 'בניו' refers to the king's sons, showing an ownership relation (the sons belong to the king).