Difference between "Alternate" and "Alternative?

Difference between rock and alternative rock?

• Also if anyone knows what is the difference between electronic and electronica?

• Answer:

  Electronica is a music genre encompassing a wide range of contemporary electronic music designed for a wide range of uses, including foreground listening, some forms of dancing, and background music for other activities. Unlike electronic dance music (EDM), not all examples of electronica are necessarily made for dancing. (Courtesy of Wikipedia, the rest of the article defines the differences, at https://en.wikipedia.org/wiki/Electronica ) Alternative rock (also called alternative music, alt rock or simply alternative) is a genre of rock music that emerged from the independent music underground of the 1980s and became widely popular by the 1990s. The 'alternative' definition refers to the genre's distinction from mainstream rock music, expressed primarily in a distorted guitar sound, transgressive lyrics and generally a nonchalant, defiant attitude. Also expanded on at Wikipedia ( https://en.wikipedia.org/wiki/Alternative_rock ) Alternative country and western also fits the definitions of alternative rock.