bog down vs slow down

bog down and slow down both are verbs.

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

As verbs, slow down is a hypernym of bog down; that is, slow down is a word with a broader meaning than bog down:

Other hypernyms of bog down include slow, slow up.

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