plan vs map out

plan is a noun but map out is not a noun.

Word	Noun	Adjective	Verb	Adverb
plan	Yes	No	Yes	No
map out	No	No	Yes	No

As verbs, map out is a hyponym of plan; that is, map out is a word with a more specific, narrower meaning than plan:

Other hyponyms of plan include engineer, plot, concert, redesign, blueprint, draft, draught, map.

plan (noun)	map out (noun)
scale drawing of a structure
a series of steps to be carried out or goals to be accomplished
an arrangement scheme

plan (verb)	map out (verb)
make plans for something	plan, delineate, or arrange in detail
have the will and intention to carry out some action
make or work out a plan for; devise