The terms 'jungle' and 'drum and bass' are commonly — and mistakenly — thought to indicate separate genres; confused by the fact that there is no universally accepted semantic distinction between the terms. Some associate jungle with material from the first half of the 1990s which is commonly based on irregular beats and simple bass lines, and see Drum and Bass as essentially succeeding jungle with the late 1990s post-techstep developments such as regular breakbeats and increasingly complex bass lines. Others use jungle as a shorthand for ragga jungle, a specific sub-genre within the broader realm of drum and bass. In the UK, the term jungle seemed to fall out of popularity in the mid 1990s, while in the USA the term was popular until the late 1990s and early 2000s. This could explain some of the confusion regarding the terms. In the US, the combined term "Jungle Drum and Bass" (JDB) also has some popularity, but is not widespread elsewhere and is increasingly falling out of use.
Drill n bass