cliff-hanging vs nail-biting

cliff-hanging and nail-biting both are adjectives.

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

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

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

Other synonyms of cliff-hanging include suspenseful, suspensive.

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