chelation vs medical specialty

chelation and medical specialty both are nouns.

Word	Noun	Adjective	Verb	Adverb
chelation	Yes	No	No	No
medical specialty	Yes	No	No	No

chelation (noun)	medical specialty (noun)
the process of forming a ring by forming one or more hydrogen bonds	the branches of medical science that deal with nonsurgical techniques
(medicine) the process of removing a heavy metal from the bloodstream by means of a chelate as in treating lead or mercury poisoning