slow down vs bog down

slow down and bog down both are verbs.

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

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

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

slow down (verb)	bog down (verb)
become less tense, rest, or take one's ease	cause to slow down or get stuck
lose velocity; move more slowly	get stuck while doing something
become slow or slower	be unable to move further
reduce the speed of	cause to get stuck as if in a mire
cause to proceed more slowly