According to manner of articulation in English phonetics the six sounds such as  /p/,/b/,/t/,/d/,/k/, and /g/ are called plosives. These sounds are formed by placing two articulating organs together in such a way that the air-passage becomes automatically closed, and when the closure is lifted by separating the organs, an amount of air suddenly escapes by making an explosive sound.  It is also known as ‘stop consonant’, because the air stops at a particular place for some time before it escapes. The six plosives form three pairs of which the first consonants are voiceless and the second ones are voiced.