Erotic massage is a massage when a masseuse massages your naked body. Usually finished by happy ending (orgasm while masseuse basically masturbates your penis).
Tantric massage is more about deep energies of your body than a "just" reach your orgasm. Tantra is about love and passion. Tantra is peace. Anybody who knows true tantra can provide you amazing, sensual experience.
Nuru massage is a bit similar to eritic massage. But difference maske nuru gel which is applioed to your body. Naked masseuse then provides you slidy massage by hands but she can also slide over your parts by her whole body.