save vs save up

save is a noun but save up is not a noun.

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

As verbs, save and save up are synonyms defined as:

Other synonyms of save include lay aside.

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

save (verb)	save up (verb)
make unnecessary an expenditure or effort	accumulate money for future use
record data on a computer
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