In phonetics, an occlusive, sometimes known as a stop, is a consonant sound produced by occluding (i.e. blocking) airflow in the vocal tract, but not necessarily in the nasal tract.
They say, All languages in the world have occlusives[2] and most have at least the voiceless stops [p], [t], [k] and the nasals [n], and [m].
In fact, the labial plosive is the least stable of the voiceless stops in the languages of the world, as the unconditioned sound change [p] → [f] (→ [h] → Ø) is quite common in unrelated languages, having occurred in the history of Classical Japanese, Classical Arabic and Proto-Celtic, for instance.
Some of the Chimakuan, Salishan, and Wakashan languages near Puget Sound lack nasal occlusives [m] and [n], as does the Rotokas language of Papua New Guinea.
It may be more accurate to say that Hawaiian and colloquial Samoan do not distinguish velar and coronal stops than to say they lack one or the other.