nail-biting vs cliff-hanging

nail-biting and cliff-hanging both are adjectives.

Word	Noun	Adjective	Verb	Adverb
nail-biting	No	Yes	No	No
cliff-hanging	No	Yes	No	No

As adjectives, nail-biting and cliff-hanging are synonyms defined as:

nail-biting and cliff-hanging: (of a situation) characterized by or causing suspense

Other synonyms of nail-biting include suspenseful, suspensive.

nail-biting (adjective)	cliff-hanging (adjective)
(of a situation) characterized by or causing suspense	(of a situation) characterized by or causing suspense