Industrial Rock is the mixture of rock music (electric guitars, drums and bass with very heavy lyrics) and industrial electronic machinery sounds that true commercial success really rises in early 1990s with bands like "Ministry" and "Nine Inch Nails (NIN)".
Ex : NIN
Industrial Metal is also the merge of metal music (synthesizers, distorted vocals, fast drum beats and loud riffs guitar solos) with harsh heavy electronic sounds effects which fuses into this common genre late 1980s debut 1990s.
Ex : Rammstein