sticker vs glochidium

sticker and glochidium both are nouns.

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

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

Other hyponyms of sticker include glochid.

sticker (noun)	glochidium (noun)
a short knife with a pointed blade used for piercing or stabbing	a barbed spine or bristle (often tufted on cacti)
an adhesive label
a particularly difficult or baffling question or problem
a small sharp-pointed tip resembling a spike on a stem or leaf