grind to a halt vs mire

grind to a halt is not a noun while mire is a noun.

Word	Noun	Adjective	Verb	Adverb
grind to a halt	No	No	Yes	No
mire	Yes	No	Yes	No

As verbs, grind to a halt and mire are synonyms defined as:

Other synonyms of grind to a halt include bog down, get stuck.

grind to a halt (noun)	mire (noun)
	a soft wet area of low-lying land that sinks underfoot
	a difficulty or embarrassment that is hard to extricate yourself from
	deep soft mud in water or slush

grind to a halt (verb)	mire (verb)
be unable to move further	soil with mud, muck, or mire
	be unable to move further
	cause to get stuck as if in a mire
	entrap