piercing vs lancinate

piercing and lancinate both are adjectives.

Word	Noun	Adjective	Verb	Adverb
piercing	No	Yes	No	No
lancinate	No	Yes	No	No

As adjectives, piercing and lancinate are synonyms defined as:

Other synonyms of piercing include cutting, keen, knifelike, lancinating, stabbing.

piercing (adjective)	lancinate (adjective)
having or demonstrating ability to recognize or draw fine distinctions	painful as if caused by a sharp instrument
painful as if caused by a sharp instrument