gain vs reduce

gain is a noun but reduce is not a noun.

Word	Noun	Adjective	Verb	Adverb
gain	Yes	No	Yes	No
reduce	No	No	Yes	No

gain (noun)	reduce (noun)
the amount of increase in signal power or voltage or current expressed as the ratio of output to input
the advantageous quality of being beneficial
the amount by which the revenue of a business exceeds its cost of operating
a quantity that is added

gain (verb)	reduce (verb)
increase (one's body weight)	take off weight
rise in rate or price	cut down on; make a reduction in
increase or develop	narrow or limit
obtain advantages, such as points, etc.	cook until very little liquid is left
reach a destination, either real or abstract	to remove oxygen from a compound, or cause to react with hydrogen or form a hydride, or to undergo an increase in the number of electrons
earn on some commercial or business transaction; earn as salary or wages	make smaller
win something through one's efforts	reduce in size; reduce physically
derive a benefit from	make less complex
obtain	reduce in scope while retaining essential elements
	lessen the strength or flavor of a solution or mixture
	be cooked until very little liquid is left
	be the essential element
	destress and thus weaken a sound when pronouncing it
	undergo meiosis
	reposition (a broken bone after surgery) back to its normal site
	lower in grade or rank or force somebody into an undignified situation
	lessen and make more modest
	simplify the form of a mathematical equation of expression by substituting one term for another
	bring to humbler or weaker state or condition
	put down by force or intimidation