jerk vs schmuck

jerk and schmuck both are nouns.

Word	Noun	Adjective	Verb	Adverb
jerk	Yes	No	Yes	No
schmuck	Yes	No	No	No

As nouns, schmuck is a hyponym of jerk; that is, schmuck is a word with a more specific, narrower meaning than jerk:

Other hyponyms of jerk include schmo, shmo, shmuck.

jerk (noun)	schmuck (noun)
an abrupt spasmodic movement	(Yiddish) a jerk
a sudden abrupt pull
raising a weight from shoulder height to above the head by straightening the arms
meat (especially beef) cut in strips and dried in the sun
a dull stupid fatuous person
(mechanics) the rate of change of acceleration

jerk (verb)	schmuck (verb)
make an uncontrolled, short, jerky motion
throw or toss with a quick motion
pull, or move with a sudden movement
move with abrupt, seemingly uncontrolled motions
jump vertically, with legs stiff and back arched