slow up vs bog down

slow up and bog down both are verbs.

Word	Noun	Adjective	Verb	Adverb
slow up	No	No	Yes	No
bog down	No	No	Yes	No

As verbs, bog down is a hyponym of slow up; that is, bog down is a word with a more specific, narrower meaning than slow up:

Other hyponyms of slow up include bog, clog, constipate.

slow up (verb)	bog down (verb)
lose velocity; move more slowly	cause to slow down or get stuck
cause to proceed more slowly	get stuck while doing something
become slow or slower	be unable to move further
	cause to get stuck as if in a mire