Himalayan pink salt is also known as Himalayan salt, pink salt, Sendha namak, or rock salt. It's a naturally occurring rock salt mined from the Khewra Salt Mine in Pakistan, near the Himalayas. It's often called halite or Saindhava lavana as well.
Rock sea salt is also known as halite, saindhava lavana, or rock salt. It's a naturally occurring form of sodium chloride (NaCl) found in underground deposits.