concert vs contrive

concert is a noun but contrive is not a noun.

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

As verbs, contrive is a hypernym of concert; that is, contrive is a word with a broader meaning than concert:

Other hypernyms of concert include design, plan, project.

concert (noun)	contrive (noun)
a performance of music by players or singers not involving theatrical staging

concert (verb)	contrive (verb)
settle by agreement	come up with (an idea, plan, explanation, theory, or principle) after a mental effort
contrive (a plan) by mutual agreement	make or work out a plan for; devise
	put or send forth