schedule vs scheduler

schedule and scheduler both are nouns.

Word	Noun	Adjective	Verb	Adverb
schedule	Yes	No	Yes	No
scheduler	Yes	No	No	No

schedule (noun)	scheduler (noun)
a temporally organized plan for matters to be attended to	computer hardware that arranges jobs to be done by the computer in an appropriate order
an ordered list of times at which things are planned to occur

schedule (verb)	scheduler (verb)
plan for an activity or event
make a schedule; plan the time and place for events