reduce vs spill

reduce is not a noun while spill is a noun.

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

As verbs, spill is a hyponym of reduce; that is, spill is a word with a more specific, narrower meaning than reduce:

reduce (noun)	spill (noun)
	the act of allowing a fluid to escape
	a sudden drop from an upright position
	a channel that carries excess water over or around a dam or other obstruction
	liquid that is spilled

reduce (verb)	spill (verb)
take off weight	reduce the pressure of wind on (a sail)
cut down on; make a reduction in	reveal information
narrow or limit	cause or allow (a solid substance) to flow or run out or over
cook until very little liquid is left	pour out in drops or small quantities or as if in drops or small quantities
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	cause or allow (a liquid substance) to run or flow from a container
make smaller	flow, run or fall out and become lost
reduce in size; reduce physically
make less complex
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