spend vs save

spend is not a noun while save is a noun.

Word	Noun	Adjective	Verb	Adverb
spend	No	No	Yes	No
save	Yes	No	Yes	No

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

spend (noun)	save (noun)
	(sports) the act of preventing the opposition from scoring

spend (verb)	save (verb)
pay out	make unnecessary an expenditure or effort
spend completely	record data on a computer
use up a period of time in a specific way	to keep up and reserve for personal or special use
	accumulate money for future use
	spend less; buy at a reduced price
	retain rights to
	spend sparingly, avoid the waste of
	bring into safety
	save from ruin, destruction, or harm
	save from sins
	refrain from harming