Sphacelotheca reiliana vs head smut

Sphacelotheca reiliana and head smut both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sphacelotheca reiliana	Yes	No	No	No
head smut	Yes	No	No	No

As nouns, Sphacelotheca reiliana and head smut are synonyms defined as:

Sphacelotheca reiliana and head smut: smut fungus attacking heads of corn or sorghum and causing a covered smut

Sphacelotheca reiliana (noun)	head smut (noun)
smut fungus attacking heads of corn or sorghum and causing a covered smut	smut fungus attacking heads of corn or sorghum and causing a covered smut