milo maize vs milo

milo maize and milo both are nouns.

Word	Noun	Adjective	Verb	Adverb
milo maize	Yes	No	No	No
milo	Yes	No	No	No

As nouns, milo maize and milo are synonyms defined as:

milo maize and milo: small drought-resistant sorghums having large yellow or whitish grains

milo maize (noun)	milo (noun)
small drought-resistant sorghums having large yellow or whitish grains	small drought-resistant sorghums having large yellow or whitish grains