plan vs contrive

plan is a noun but contrive is not a noun.

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

As verbs, plan and contrive are synonyms defined as:

Other synonyms of plan include design, project.

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

plan (verb)	contrive (verb)
make plans for something	come up with (an idea, plan, explanation, theory, or principle) after a mental effort
have the will and intention to carry out some action	make or work out a plan for; devise
make or work out a plan for; devise	put or send forth