pulling vs jerk

pulling and jerk both are nouns.

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

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

pulling: the act of pulling; applying force to move something toward or with you
jerk: a sudden abrupt pull

Other hyponyms of pulling include drag, draw, haul, haulage, tug, draft, draught, drawing, deracination, excision, extirpation, pluck, traction.

pulling (noun)	jerk (noun)
the act of pulling; applying force to move something toward or with you	an abrupt spasmodic movement
	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

pulling (verb)	jerk (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