also: フアン
Refers to a person who is an enthusiastic admirer or supporter of something, such as a celebrity, sports team, or hobby.
He is a huge baseball fan.
私はこのバンドのファンになって10年になる。
I've been a fan of this band for ten years.
electric fan
Refers to the electrical appliance that blows air for cooling or ventilation.
暑いのでファンをつけてください。
It's hot, so please turn on the fan.
このファンは静かで風量も強い。
This fan is quiet and has strong airflow.
She became a fan of that singer.
It was hot, so I turned on the fan.
I'm a fan of that team.
He gained more fans with his new album.
ファン just means a fan or supporter of something and is neutral in tone, whereas オタク implies a deeper, more obsessive and often solitary devotion.
ファン is a simple, neutral word for a fan or supporter, while ヲタ implies a much deeper, sometimes obsessive level of devotion.
ファン just means a fan or admirer, a much milder level of interest than the obsessive, all-consuming devotion implied by 狂.
fan of someone's looks; face fan