This recent question introduced me to the concepts of 外来語【がいらいご】, defined as foreign words not originating from Chinese, and 和製英語【わせいえいご】, which are English constructions that were made in Japan. ...
Is wasei-eigo or wasei-kango looked down upon by Japanese language purists (as opposed to English or Chinese purists!) as informal, inauthentic, incorrect or the like?
In my wanderings around Japan giving my kana knowledge some practice I've noticed both the words "ガール" (gāru) and "ガールズ" (gāruzu) in use at least in signage. Obviously they are borrowed from English ...