char vs animal charcoal

char and animal charcoal both are nouns.

Word	Noun	Adjective	Verb	Adverb
char	Yes	No	Yes	No
animal charcoal	Yes	No	No	No

As nouns, animal charcoal is a hyponym of char; that is, animal charcoal is a word with a more specific, narrower meaning than char:

char: a charred substance
animal charcoal: black substance containing char in the form of carbonized bone; used as a black pigment

Other hyponyms of char include animal black, bone black, bone char, snuff.

char (noun)	animal charcoal (noun)
any of several small trout-like fish of the genus Salvelinus	black substance containing char in the form of carbonized bone; used as a black pigment
a human female employed to do housework
a charred substance

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