compact vs convulse

compact is a noun but convulse is not a noun.

Word	Noun	Adjective	Verb	Adverb
compact	Yes	Yes	Yes	No
convulse	No	No	Yes	No

As verbs, convulse is a hyponym of compact; that is, convulse is a word with a more specific, narrower meaning than compact:

Other hyponyms of compact include choke, strangle, prim, astringe, strangulate, bear down, overbear, choke, fret, gag, choke, scrag.

compact (noun)	convulse (noun)
a small cosmetics case with a mirror; to be carried in a woman's purse
a small and economical car
a signed written agreement between two or more parties (nations) to perform some action

compact (adjective)	convulse (adjective)
closely and firmly united or packed together
briefly giving the gist of something
having a short and solid form or stature

compact (verb)	convulse (verb)
squeeze or press together	be overcome with laughter
compress into a wad	make someone convulse with laughter
make more compact by or as if by pressing	contract involuntarily, as in a spasm
have the property of being packable or of compacting easily	cause to contract
	move or stir about violently
	shake uncontrollably