Difference between Sleepwalker and Noctambulist

What is the difference between Sleepwalker and Noctambulist?

Sleepwalker as a noun is someone who walks about in their sleep while Noctambulist as a noun is (obscure) a person who walks at night. a rarer term for somnambulist, a sleepwalker.

We hope you now know whether to use Sleepwalker or Noctambulist in your sentence.