ingrown toenail vs onyxis

ingrown toenail and onyxis both are nouns.

Word	Noun	Adjective	Verb	Adverb
ingrown toenail	Yes	No	No	No
onyxis	Yes	No	No	No

As nouns, ingrown toenail and onyxis are synonyms defined as:

ingrown toenail and onyxis: toenail having its free tip or edges embedded in the surrounding flesh

ingrown toenail (noun)	onyxis (noun)
toenail having its free tip or edges embedded in the surrounding flesh	toenail having its free tip or edges embedded in the surrounding flesh