"Marks of Existence" and "Gates To Enlightenment", are they Same?

***Three gates and Four marks*** are shown using these tearms -Impermanence, Suffering, Non-self, Voidness, Nirvana,Shunyata (Emptiness). Some questions discuss them separatly. But some conflicts can see. Quote from FullPeaceOrg > The Three marks of existence (Pali: tilakkhaṇa; Sanskrit: trilakṣaṇa), > are these three characteristics (**Theravada**) > > Impermanence (Anicca) > Suffering or unsatisfactoriness (Dukkha) > Non-self or not-self (Anatta) > > This is a central teaching in Buddhism - completely understanding > these three leads to the liberation of Nirvana/Nibbana. All sentient > beings experience these marks of existence Quote from Andrei > In an interesting twist, my present teacher, who comes from a > **Taoism**-influenced non-sectarian tradition, speaks of ***Three Gates To > Enlightenment***, the experiential realizations one must go through on > one's way to Completion: > > - Pain or Suffering. One must realize that life is painful and accept pain as necessary condition for one's growth. This involves > dropping resistance that comes from seeing pain as important factor of > one's decisions. > - Impermanence or Transience. One must fully accept that nothing is permanent in one's life, and admit the inevitability of death. This > involves dropping attachments to what one holds as dear. > - Nothingness or Voidness. One must go through the realization that life is pointless and has no meaning in the absolute sense. This > involves dropping fundamental preconceptions or imperatives about the > purpose of one's life. > Quote from Three Marks of **Mahayana** > Most of the time in Mahayana (both **Vajrayana** and **Zen**) I hear of **Four Marks of Existence**: Transience, Unsatisfactoriness, Corelessness, and > Nirvana. All four are subsumed under Shunyata (Emptiness) which is > equated with Pratitya-Samutpada (Dependent Co-Arising). **Is something missing there?** **Is there any common agreement?**