chink vs fissure

chink and fissure both are nouns.

Word	Noun	Adjective	Verb	Adverb
chink	Yes	No	Yes	No
fissure	Yes	No	Yes	No

As nouns, fissure is a hypernym of chink; that is, fissure is a word with a broader meaning than chink:

Other hypernyms of chink include cleft, crack, crevice, scissure.

chink (noun)	fissure (noun)
a short light metallic sound	(anatomy) a long narrow slit or groove that divides an organ into lobes
a narrow opening as e.g. between planks in a wall	a long narrow cleft
(ethnic slur) offensive term for a person of Chinese descent	a long narrow depression in a surface

chink (verb)	fissure (verb)
make cracks or chinks in	break into fissures or fine cracks
fill the chinks of, as with caulking
make or emit a high sound