Post-Punk is a rock music movement with its roots in the late 1970s, following on the heels of the initial punk rock explosion of the mid-1970s and reached into the early 1980's predominantly in major western music markets of the USA, The UK, France, Australia and Canada. The genre retains its roots in the punk movement but is more introverted, complex and experimental. Some music commentators consider post-punk to be a renamed version of New Wave music which lasted until the late 70's in its original artful form and then morphed into pop-infused versions of itself during the early 80's, whearas post-punk (incorporating new wave) lasted until approxiamately 1984.
Although the term Post Punk was coined by Sounds magazine to describe Siouxsie and the Banshees, the use of the term did not come into wide usage till the late 1980's and early 1990's to describe that era of music. Prior to that the 'New Wave' moniker was used to describe more sophisticated derived offerings of punk.