tormentor vs tantaliser

tormentor and tantaliser both are nouns.

Word	Noun	Adjective	Verb	Adverb
tormentor	Yes	No	No	No
tantaliser	Yes	No	No	No

As nouns, tantaliser is a hyponym of tormentor; that is, tantaliser is a word with a more specific, narrower meaning than tormentor:

tormentor: someone who torments
tantaliser: someone who tantalizes; a tormentor who offers something desirable but keeps it just out of reach

Other hyponyms of tormentor include harasser, blighter, cuss, gadfly, pest, pesterer, tantalizer, witch-hunter.

tormentor (noun)	tantaliser (noun)
a flat at each side of the stage to prevent the audience from seeing into the wings	someone who tantalizes; a tormentor who offers something desirable but keeps it just out of reach
someone who torments