Glam Rock: 80s phenomenon that included Poison, Motley Crue, Cinderella.
Glitter Roack: 70s phenomenon that included David Bowie, Slade, the Sweet, and Gary Glitter.
Kiss is the bridge between the glitter rock of the early 70s and the glam rock of the 1980s.
Out of curiosity, I checked AllMusic.com and both descriptions are listed for (the) Sweet. As a side note, two of the four band members are since deceased.
http://www.allmusic.com/cg/amg.dll?p=amg&sql=11:hifuxqr5ldae