clog vs gum up

clog is a noun but gum up is not a noun.

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

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

Other hyponyms of clog include block, choke up, lug, stuff, silt, silt up.

clog (noun)	gum up (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

clog (verb)	gum up (verb)
impede with a clog or as if with a clog	stick together as if with gum
fill to excess so that function is impaired
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