Descriptive phonetic classification relies on the relationships between a number of technical terms that describe the way sounds are made; and one of the relevant elements involves that place at which a specific sound is formed and voiced.
Along with the manner of articulation and phonation, this gives the consonant its distinctive sound.
Consonants that have a similar or the same place of articulation, such as the alveolar sounds (n, t, d, s, z, l) in English, are said to be homorganic.
[2] In some languages, a syllable-initial homorganic sequence of a stop and a nasal is quite uncontroversially treated as a sequence of two separate segments; and the separate status of the stop and the nasal is quite clear.
The romanization or transliteration of the sound of each Japanese word produces the misleading impression of a doubled consonant.