sticker vs dirk

sticker and dirk both are nouns.

Word	Noun	Adjective	Verb	Adverb
sticker	Yes	No	No	No
dirk	Yes	No	No	No

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

Other hyponyms of sticker include kirpan, crease, creese, kris, bodkin, poniard, stiletto.

sticker (noun)	dirk (noun)
a short knife with a pointed blade used for piercing or stabbing	a relatively long dagger with a straight blade
an adhesive label
a particularly difficult or baffling question or problem
a small sharp-pointed tip resembling a spike on a stem or leaf