亲近 (qīn jìn): (of people or relationships) close; intimate; to draw close to; to engage with; to become familiar with (nature, places, ideas, art etc)

She was raised by her grandmother from a young age, so she is especially close to her.

Although they are biological brothers, their relationship is not close because they haven't seen each other for years.

When the puppy first came home, it was very afraid of people, but now it is getting closer and closer to us.

Teacher Zhang often chats with students after class, so everyone feels he is very approachable.