In my view, I would not equate attachment with either, but both can possibly be part of it for someone. I think attachment can be defined in many ways, I prefer a more descriptive one: a marked desire to associate ourselves with someone or something. I really think anything else is highly individual.

Love can also be many different kinds and I don't think all forms of love involve intense attachment. For me, for example, the most fulfilling forms of love feelings and relationships do not tend to involve intense desires to possess someone or to be continuously associated with them and have their attention. And definitely not a fear of abandonment, where the most critical emotion, IMO, is the actual fear - and a feeling of uncontrollable attachment is more a consequence of that fear in my personal view.

I often actually feel that the kind of "attachment" people describe on this forum is more obsession or a form of addiction than love or strong specific interpersonal interest, and this is a reason for me that I don't actually like to use the word "attachment" to describe something so intense, consuming, often one-sided and out of control.

I think all this is extremely subjective and hard to come up with terms and definitions everyone (or even most) would agree with.