slow up vs bog

slow up is not a noun while bog is a noun.

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

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

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

slow up (noun)	bog (noun)
	wet spongy ground of decomposing vegetation; has poorer drainage than a swamp; soil is unfit for cultivation but can be cut and dried and used for fuel

slow up (verb)	bog (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