Japanese ADULT Industry 
 AV業界 

JAPAN one of the top creators of adult content in the world

What is AV?

It is the abbreviation for Adult Video and refers to the pornographic content in Japan.
Out of Asia also knows him as JAV: 
Japanese Adult Video

念願の家族旅行でまさか義理の父が目の色変えて挿入れてくるだなんて… この旅先での出来事はお母さんには口が裂けても言えません 夕美しおん

AV actress or AV idol? 
AV女優  (AVJoyuu)

Both are correct and mean the same thing (porn actress or porn idol) both terms can be used, although in reality they are actresses, but their way of popularizing and idolizing them is similar to idols, which is why they are also classified as idols but for Adults.

Tachibana Mary