Question marks and exclamation points are dots with an extra bit. Ellipses may be multiple dots, but also indicate an uncertain end to the sentence. (Formal usage distinguishes ”...” for ellipses in arbitrary position and ”....” for ellipses coming after a full stop, but the latter is rarely seen in any but academic writing, and I would guess even many academics don’t notice the difference these days.)
Question marks and exclamation points are dots with an extra bit. Ellipses may be multiple dots, but also indicate an uncertain end to the sentence. (Formal usage distinguishes ”...” for ellipses in arbitrary position and ”....” for ellipses coming after a full stop, but the latter is rarely seen in any but academic writing, and I would guess even many academics don’t notice the difference these days.)