What is the difference between Tajweed and Tilawah, with a clarification of the main rulings of each?

Tajweed is giving each letter its due in terms of attributes and points of articulation, and its due in terms of rulings, whereas recitation (tilawa) is merely reading the Quran, whether or not the rules of Tajweed are observed in it. The questioner is advised to refer to specialized books by scholars, such as "Al-Tibyan fi Adab Hamalat al-Quran" and "Al-Burhan fi Tajwid al-Quran."