grind to a halt vs bog down

grind to a halt and bog down both are verbs.

Word	Noun	Adjective	Verb	Adverb
grind to a halt	No	No	Yes	No
bog down	No	No	Yes	No

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

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

grind to a halt (verb)	bog down (verb)
be unable to move further	cause to slow down or get stuck
	get stuck while doing something
	be unable to move further
	cause to get stuck as if in a mire