hypnotic vs spellbinding

hypnotic is a noun but spellbinding is not a noun.

Word	Noun	Adjective	Verb	Adverb
hypnotic	Yes	Yes	No	No
spellbinding	No	Yes	No	No

As adjectives, hypnotic and spellbinding are synonyms defined as:

hypnotic and spellbinding: attracting and holding interest as if by a spell

Other synonyms of hypnotic include mesmeric, mesmerizing.

hypnotic (noun)	spellbinding (noun)
a drug that induces sleep

hypnotic (adjective)	spellbinding (adjective)
of or relating to hypnosis	attracting and holding interest as if by a spell
attracting and holding interest as if by a spell