plan vs docket

plan and docket both are nouns.

Word	Noun	Adjective	Verb	Adverb
plan	Yes	No	Yes	No
docket	Yes	No	Yes	No

As nouns, docket is a hyponym of plan; that is, docket is a word with a more specific, narrower meaning than plan:

plan (noun)	docket (noun)
scale drawing of a structure	a temporally organized plan for matters to be attended to
a series of steps to be carried out or goals to be accomplished	(law) the calendar of a court; the list of cases to be tried or a summary of the court's activities
an arrangement scheme

plan (verb)	docket (verb)
make plans for something	make a summary or abstract of a legal document and inscribe it in a list
have the will and intention to carry out some action	place on the docket for legal action
make or work out a plan for; devise