cicatrix vs callus

cicatrix and callus both are nouns.

Word	Noun	Adjective	Verb	Adverb
cicatrix	Yes	No	No	No
callus	Yes	No	Yes	No

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

cicatrix: a mark left (usually on the skin) by the healing of injured tissue
callus: bony tissue formed during the healing of a fractured bone

Other hyponyms of cicatrix include cheloid, keloid, pockmark, sword-cut, vaccination.

cicatrix (noun)	callus (noun)
a mark left (usually on the skin) by the healing of injured tissue	(botany) an isolated thickening of tissue, especially a stiff protuberance on the lip of an orchid
	bony tissue formed during the healing of a fractured bone
	an area of skin that is thick or hard from continual pressure or friction (as the sole of the foot)

cicatrix (verb)	callus (verb)
	form a callus or calluses
	cause a callus to form on