The problem with caring, connection, and attachment is that there's different levels and each person has their own definition. Same with defining love.

So from my understanding:

Caring is sympathy, empathy, kindness, doing something positive for the other person. But there's different levels. The way I care about my dogs is different from my fiance, is different from my family, is different from people here, etc. I guess it's more effort towards doing positive things? Idk.

Connection is being able to relate to another and a feeling of belonging? You can have it on a small level when you meet someone who has something in common with you. On a deeper level, you feel like this person has a place in your life. It can be a feeling that you've known this person your whole life even if you've only known them a little while.

Attachment is an emotional bond. In the negative aspect, attachment is clingy, needy, and dependent. In the positive aspect, healthy attachment is more like an interdependent relationship. You are each your own independent person, but when you come together, you have a strong emotional bond/connection. Just attachment can be one sided.

Then there's transference. That is when you see and treat someone like someone else from your present or past. It can be negative or positive.