slow up vs clog

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

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

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

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

slow up (noun)	clog (noun)
	a dance performed while wearing shoes with wooden soles; has heavy stamping steps
	any object that acts as a hindrance or obstruction
	footwear usually with wooden soles

slow up (verb)	clog (verb)
lose velocity; move more slowly	impede with a clog or as if with a clog
cause to proceed more slowly	fill to excess so that function is impaired
become slow or slower	coalesce or unite in a mass
	become or cause to become obstructed
	impede the motion of, as with a chain or a burden
	dance a clog dance