infusion vs medical specialty

infusion and medical specialty both are nouns.

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

infusion (noun)	medical specialty (noun)
(medicine) the passive introduction of a substance (a fluid or drug or electrolyte) into a vein or between tissues (as by gravitational force)	the branches of medical science that deal with nonsurgical techniques
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)