super acid vs special K

super acid and special K both are nouns.

Word	Noun	Adjective	Verb	Adverb
super acid	Yes	No	No	No
special K	Yes	No	No	No

As nouns, super acid and special K are synonyms defined as:

Other synonyms of super acid include cat valium, green, honey oil, jet, K, super C.

super acid (noun)	special K (noun)
street names for ketamine	street names for ketamine