fascinating vs riveting

fascinating and riveting both are adjectives.

Word	Noun	Adjective	Verb	Adverb
fascinating	No	Yes	No	No
riveting	No	Yes	No	No

As adjectives, fascinating and riveting are synonyms defined as:

Other synonyms of fascinating include absorbing, engrossing, gripping.

fascinating (adjective)	riveting (adjective)
capturing interest as if by a spell	capable of arousing and holding the attention
capable of arousing and holding the attention