pull vs tug

pull and tug both are nouns.

Word	Noun	Adjective	Verb	Adverb
pull	Yes	No	Yes	No
tug	Yes	No	Yes	No

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

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

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

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

pull: direct toward itself or oneself by means of some psychological power or physical attributes
tug: pull hard

Other hyponyms of pull include arrest, catch, get, draw in, retract, bring.

pull (noun)	tug (noun)
the act of pulling; applying force to move something toward or with you	a sudden abrupt pull
a slow inhalation (as of tobacco smoke)	a powerful small boat designed to pull or push larger ships
a sustained effort
a device used for pulling something
special advantage or influence
the force used in pulling
a sharp strain on muscles or ligaments

pull (verb)	tug (verb)
strain abnormally	struggle in opposition
take away	pull hard
take sides with; align oneself with; show strong sympathy for	pull or strain hard at
cause to move by pulling	move by pulling hard
tear or be torn violently	carry with difficulty
direct toward itself or oneself by means of some psychological power or physical attributes	tow (a vessel) with a tug
hit in the direction that the player is facing when carrying through the swing	strive and make an effort to reach a goal
apply force so as to cause motion towards the source of the motion
strip of feathers
remove, usually with some force or effort; also used in an abstract sense
steer into a certain direction
move into a certain direction
operate when rowing a boat
bring, take, or pull out of a container or from under a cover
rein in to keep from winning a race
cause to move in a certain direction by exerting a force upon, either physically or in an abstract sense
perform an act, usually with a negative connotation