smut vs stinking smut

smut and stinking smut both are nouns.

Word	Noun	Adjective	Verb	Adverb
smut	Yes	No	Yes	No
stinking smut	Yes	No	No	No

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

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

smut: destructive diseases of plants (especially cereal grasses) caused by fungi that produce black powdery masses of spores
stinking smut: disease of wheat characterized by replacement of the grains with greasy masses of smelly smut spores

Other hyponyms of smut include loose smut, bunt, flag smut, false smut, green smut.

smut (noun)	stinking smut (noun)
creative activity (writing or pictures or films etc.) of no literary or artistic value other than to stimulate sexual desire	similar to Tilletia caries
an offensive or indecent word or phrase	disease of wheat characterized by replacement of the grains with greasy masses of smelly smut spores
any fungus of the order Ustilaginales
destructive diseases of plants (especially cereal grasses) caused by fungi that produce black powdery masses of spores
a black colloidal substance consisting wholly or principally of amorphous carbon and used to make pigments and ink

smut (verb)	stinking smut (verb)
affect with smut or mildew, as of a crop such as corn
stain with a dirty substance, such as soot
become affected with smut
make obscene