plan vs draw a bead on

plan is a noun but draw a bead on is not a noun.

Word	Noun	Adjective	Verb	Adverb
plan	Yes	No	Yes	No
draw a bead on	No	No	Yes	No

As verbs, draw a bead on is a hyponym of plan; that is, draw a bead on is a word with a more specific, narrower meaning than plan:

Other hyponyms of plan include think out, aim, aspire, shoot for, go for, hope.

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

plan (verb)	draw a bead on (verb)
make plans for something	have an ambitious plan or a lofty goal
have the will and intention to carry out some action	aim with a gun
make or work out a plan for; devise