console vs calm down

console is a noun but calm down is not a noun.

Word	Noun	Adjective	Verb	Adverb
console	Yes	No	Yes	No
calm down	No	No	Yes	No

As verbs, calm down is a hyponym of console; that is, calm down is a word with a more specific, narrower meaning than console:

Other hyponyms of console include calm, lull, quiet, quieten, still, tranquilize, tranquillise, tranquillize, allay, ease, relieve, still.

console (noun)	calm down (noun)
housing for electronic instruments, as radio or television
an ornamental scroll-shaped bracket (especially one used to support a wall fixture)
a scientific instrument consisting of displays and an input device that an operator can use to monitor and control a system (especially a computer system)
a small table fixed to a wall or designed to stand against a wall

console (verb)	calm down (verb)
give moral or emotional strength to	become quiet or less intensive
	make calm or still
	become quiet or calm, especially after a state of agitation