-tanga
1. A suffix used to make verbs into nouns, sometimes called derived nouns, and the usual ending for verbs that take the passive ending -tia. These nouns usually mean the place or the time of the verb's action.
(Te Pihinga Textbook (Ed. 2): 88-89, 123-124;)
Koia rā te rā whakamaharatanga ki ngā hōia Māori i mate i ngā Pakanga ō Te Ao Tuatahi, Tuarua hoki. / That was the remembrance day for the soldiers who died in the First and Second World Wars.
2. It is also the derived noun ending when a base is used to modify another base.
(Te Pihinga Textbook (Ed. 2): 88-89;)
Koia nei rā te manaaki nui a Ngoi i a au i taku taenga tuatahitanga ki tana kāinga. / This was how hospitable Ngoi was to me the first time I arrived at her home.
3. It is also the suffix added to nouns to designate the quality derived from the base noun.
Ki a au nei he tohu tēnei kei te pūpuri au i taku Māoritanga. / In my opinion this is a sign that I am retaining my Māori identity.