wank vs jack off

wank is a noun but jack off is not a noun.

Word	Noun	Adjective	Verb	Adverb
wank	Yes	No	Yes	No
jack off	No	No	Yes	No

As verbs, wank and jack off are synonyms defined as:

Other synonyms of wank include fuck off, jerk off, masturbate, she-bop.

wank (noun)	jack off (noun)
slang for masturbation

wank (verb)	jack off (verb)
get sexual gratification through self-stimulation	get sexual gratification through self-stimulation