save vs hold open

save is a noun but hold open is not a noun.

Word	Noun	Adjective	Verb	Adverb
save	Yes	No	Yes	No
hold open	No	No	Yes	No

As verbs, save and hold open are synonyms defined as:

Other synonyms of save include keep, keep open.

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

save (verb)	hold open (verb)
make unnecessary an expenditure or effort	retain rights to
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