infuse vs infusion

infuse is not a noun while infusion is a noun.

Word	Noun	Adjective	Verb	Adverb
infuse	No	No	Yes	No
infusion	Yes	No	No	No

infuse (noun)	infusion (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 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)

infuse (verb)	infusion (verb)
introduce into the body through a vein, for therapeutic purposes
let sit in a liquid to extract a flavor or to cleanse
fill, as with a certain quality
undergo the process of infusion
teach and impress by frequent repetitions or admonitions