eardrop vs earring

eardrop and earring both are nouns.

Word	Noun	Adjective	Verb	Adverb
eardrop	Yes	No	No	No
earring	Yes	No	No	No

As nouns, earring is a hypernym of eardrop; that is, earring is a word with a broader meaning than eardrop:

eardrop: an earring with a pendant ornament
earring: jewelry to ornament the ear; usually clipped to the earlobe or fastened through a hole in the lobe

eardrop (noun)	earring (noun)
an earring with a pendant ornament	jewelry to ornament the ear; usually clipped to the earlobe or fastened through a hole in the lobe