A standard response to the problem of diachronic vagueness is 'the semantic solution', which demands an abundant ontology. Although it is known that the abundant ontology does not logically preclude endurantism, their combination is rejected because it necessitates massive coincidence between countless objects. In this paper, I establish that the semantic solution is available not only to perdurantists but also to endurantists by showing that there is no problem with such ubiquitous and principled coincidence.There is a well-known problem of diachronic vagueness. Intuitively speaking, a car, a vase, a tree seem to go out of existence gradually. But if they did really do that, there would be worldly, or ontic vagueness. We can avoid ontic vagueness if we adopt 'the semantic solution' to vagueness. However, the semantic solution demands an abundant ontology. It was thought that such an ontology is inconsistent with endurantism. Not any more; several philosophers have noticed that the abundant ontology on its own does not preclude endurantism. But the virtue of combining endurantism and the abundant ontology is disputed; the view even has been named 'promiscuous' endurantism. It often meets rejection because it entails that, on a regular basis, countless objects coincide in a way that cannot be accounted for by simple mereology. However, this paper will show that there is no problem with such a regular, principled, well-grounded coincidence. So, the semantic solution is available not only to perdurantists but also to endurantists, and contrary