* Adjective: Describing something that cannot die or does not age.
* Example: "The ancient gods were said to be immortal."
* Noun: Referring to a being that lives forever.
* Example: "The myths speak of immortals dwelling on Mount Olympus."
* Verb: (archaic) Meaning to make something immortal.
* Example: "The artist sought to immortalize his love in his paintings."
So, without a sentence to provide context, it's hard to say definitively which part of speech "immortal" is.