ngahau - party, concert
ngāhau - to be enjoyable, entertaining, interesting.
He aha ngā mea ngahau ki a koe?What things do you find entertaining?What? - He aha?
He tangata ngahau a Raimona.Raimona is a fun/entertaining guy.
He tino ngahau tēnei huiThis meeting is very entertaining
Keo tōu kāinga pea te ngahau nā te tini o te uri ariki.Perhaps at your home the young chiefs dance.