puller vs yanker

puller and yanker both are nouns.

Word	Noun	Adjective	Verb	Adverb
puller	Yes	No	No	No
yanker	Yes	No	No	No

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

puller: someone who applies force so as to cause motion toward herself or himself
yanker: someone who gives a strong sudden pull

Other hyponyms of puller include wrester, jerker.

puller (noun)	yanker (noun)
someone who pulls or tugs or drags in an effort to move something	someone who gives a strong sudden pull
someone who applies force so as to cause motion toward herself or himself