I have a tree which has self-seeded right on the fence line. I suspect it'll be a weed but would like to know what it is before I yank it out.

It has large, mid green cordate leaves, small white flowers which lead to round green fruit which have the look of olives.

It was grown quite fast (another reason I suspect it'll be a weed...my plants NEVER grow that fast)

I'll be putting a photo in the gallery.

any help would be appreciated?

thanks

BTW

does anyone know of a database that I could use to maybe ID it?