lancinating vs piercing

lancinating and piercing both are adjectives.

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

As adjectives, lancinating and piercing are synonyms defined as:

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

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