tantaliser vs persecutor

tantaliser and persecutor both are nouns.

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

As nouns, persecutor is a hypernym of tantaliser; that is, persecutor is a word with a broader meaning than tantaliser:

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

Other hypernyms of tantaliser include tormenter, tormentor.

tantaliser (noun)	persecutor (noun)
someone who tantalizes; a tormentor who offers something desirable but keeps it just out of reach	someone who torments