char vs cleaner

char and cleaner both are nouns.

Word	Noun	Adjective	Verb	Adverb
char	Yes	No	Yes	No
cleaner	Yes	No	No	No

As nouns, cleaner is a hypernym of char; that is, cleaner is a word with a broader meaning than char:

Other hypernyms of char include adult female, woman.

char (noun)	cleaner (noun)
any of several small trout-like fish of the genus Salvelinus	a preparation used in cleaning something
a human female employed to do housework	someone whose occupation is cleaning
a charred substance	the operator of dry-cleaning establishment

char (verb)	cleaner (verb)
burn slightly and superficially so as to affect color
burn to charcoal