infusion vs infuse

infusion is a noun but infuse is not a noun.

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

infusion (noun)	infuse (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)

infusion (verb)	infuse (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