Quran and Etrat Online Organization

Yes.

It means fire but is usually used in referance to the fires of hell (Jahanam).

Naas is the plural of the word insan. Naas means 'people'.

Prophet.

Nafillah is the name given to a set of defined mustahab (recommended) prayers that precede the 5 wajib (obligatory) daily prayers. There is also a nafillah prayer that precedes the recommended tahujjud prayer, so effectively it is a mustahab prayer that becomes part of another mustahab prayer.

Soul or self.

Peak. Nahj usually comes in a sentance as part of the title of a famous book called Nahj al Balaghah - The Peak of Eloquence. This book contains beautifully worded sermons narrated by Imam Ali (AS).

Najah means success, and it has been used as a boy's name.

An impurity - something that will cause a person to become ritually impure and require some type of ritual wash to make the individual 'clean' again. For example, urine is a source of najasah. Urine is najis.

Ritually impure/unclean. eg. Blood and urine are najis.