clash vs clank

clash and clank both are nouns.

Word	Noun	Adjective	Verb	Adverb
clash	Yes	No	Yes	No
clank	Yes	No	Yes	No

As nouns, clash and clank are synonyms defined as:

Other synonyms of clash include clang, clangor, clangoring, clangour, crash.

clash (noun)	clank (noun)
a minor short-term fight	a loud resonant repeating noise
a loud resonant repeating noise
a state of conflict between persons
a state of conflict between colors

clash (verb)	clank (verb)
disagree violently	make a clank
crash together with violent impact
be incompatible; be or come into conflict