medical specialty vs infusion

medical specialty and infusion both are nouns.

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

medical specialty (noun)	infusion (noun)
the branches of medical science that deal with nonsurgical techniques	(medicine) the passive introduction of a substance (a fluid or drug or electrolyte) into a vein or between tissues (as by gravitational force)
	the act of infusing or introducing a certain modifying element or quality
	the process of extracting certain active properties (as a drug from a plant) by steeping or soaking (usually in water)
	a solution obtained by steeping or soaking a substance (usually in water)