This is the 2090th most frequent Japanese word.
呼ぶ
"To call, invite, or summon."
In this sentence, 呼ぶ is used in the sense of 'to call someone by their name'.
私は彼を名前で呼ぶことにしています。
I make it a habit to call him by his name.
Here, 呼ぶ means 'to summon or request a service, such as calling for a taxi.'
タクシーを呼んでください。
Please call a taxi.
In this context, 呼ぶ is used to mean 'to address someone using a nickname.'